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BioMarin Pharmaceutical

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
____________

Form 10-K

____________

(Mark One)

☒

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

☐

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2019
Or

For the transition period from                     to                    .
Commission file number: 000-26727
____________

BioMarin Pharmaceutical Inc.

(Exact name of registrant as specified in its charter)

____________

Delaware

(State or other jurisdiction of
incorporation or organization)

770 Lindaro Street

San Rafael

California

(Address of principal executive offices)

68-0397820

(I.R.S. Employer
Identification No.)

94901

(Zip Code)

(415) 506-6700

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Common Stock, par value $.001

Trading Symbol(s)

BMRN

Name of each exchange on which registered

The Nasdaq Global Select Market

Securities registered under Section 12(g) of the Act:

None
____________

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  ☒    No  ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ☐    No  ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for

such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter)

during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ☒    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the

definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer

Non-accelerated filer

☒

☐

Accelerated filer

Smaller reporting company

Emerging Growth company

☐

☐

☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards
provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act.)    Yes  ☐    No   ☒

The aggregate market value of the voting and non-voting common stock held by non-affiliates of the registrant as of June 30, 2019 was $8.1 billion, based on the closing price reported for such date
on the Nasdaq Global Select Market.

As of February 12, 2020, the registrant had 179,925,602 shares of common stock, par value $0.001, outstanding.  

The documents incorporated by reference are as follows: portions of the Registrant’s Proxy Statement for its 2020 annual meeting of stockholders are incorporated by reference into Part III.

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Item 1B.
Item 2.
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Item 5.
Item 6.
Item 7.
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BIOMARIN PHARMACEUTICAL INC.
2019 FORM 10-K ANNUAL REPORT
TABLE OF CONTENTS

Part I

Business
Risk Factors
Unresolved Staff Comments
Properties
Legal Proceedings
Mine Safety Disclosures

Part II

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
Selected Consolidated Financial Data
Management’s Discussion and Analysis of Financial Condition and Results of Operations
Quantitative and Qualitative Disclosure About Market Risk
Financial Statements and Supplementary Data
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
Controls and Procedures
Other Information

Directors, Executive Officers and Corporate Governance
Executive Compensation
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
Certain Relationships and Related Transactions and Director Independence
Principal Accounting Fees and Services

Part III

Exhibits, Financial Statement Schedules
Form 10-K Summary

SIGNATURES

Part IV

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50
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50

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53
55
73
74
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75

76
76
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76

77
81

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Unless the context suggests otherwise, references in this Annual Report on Form 10-K to “BioMarin,” the “Company,” “we,” “us,” and “our” refer to

BioMarin Pharmaceutical Inc. and, where appropriate, its wholly owned subsidiaries.

BioMarin®, Brineura®, Firdapse®, Kuvan®, Naglazyme®, Palynziq® and Vimizim® are our registered trademarks. Aldurazyme® is a registered trademark

of BioMarin/Genzyme LLC. All other brand names and service marks, trademarks and other trade names appearing in this report are the property of their
respective owners.

Forward-Looking Statements

This Annual Report on Form 10-K contains “forward-looking statements” as defined under securities laws. Many of these statements can be identified

by the use of terminology such as “believes,” “expects,” “intends,” “anticipates,” “plans,” “may,” “will,” “could,” “would,” “projects,” “continues,” “estimates,”
“potential,” “opportunity” or the negative versions of these terms and other similar expressions. You should not place undue reliance on these types of forward-
looking statements, which speak only as of the date that they were made. These forward-looking statements are based on the beliefs and assumptions of our
management based on information currently available to management and should be considered in connection with any written or oral forward-looking
statements that we may issue in the future as well as other cautionary statements we have made and may make. Our actual results or experience could differ
significantly from the forward-looking statements. Factors that could cause or contribute to these differences include those discussed in the section titled “Risk
Factors” in Part II, Item 1A of this Annual Report on Form 10-K as well as information provided elsewhere in this Annual Report on Form 10-K. You should
carefully consider that information before you make an investment decision. Moreover, we operate in a very competitive and rapidly changing environment.
New risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the
extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we
may make. In light of these risks, uncertainties and assumptions, the forward-looking events and circumstances discussed in this Annual Report on Form 10-K
may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements.

Except as required by law, we do not undertake any obligation to release publicly any revisions to these forward-looking statements after completion

of the filing of this Annual Report on Form 10-K to reflect later events or circumstances or the occurrence of unanticipated events.

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Item 1. Business

Overview

Part I

BioMarin Pharmaceutical Inc. (BioMarin, we, us or our) is a global biotechnology company that develops and commercializes innovative therapies for

people with serious and life-threatening rare diseases and medical conditions. We select product candidates for diseases and conditions that represent a
significant unmet medical need, have well-understood biology and provide an opportunity to be first-to-market or offer a significant benefit over existing
products.

Our portfolio consists of several commercial products and multiple clinical and preclinical product candidates for the treatment of various diseases. We

continue to invest in our clinical and preclinical product pipeline by committing significant resources to research and development programs and business
development opportunities within our areas of scientific, manufacturing and technical expertise.

A summary of our major commercial products is provided below:

Major Commercial Products

Aldurazyme (laronidase)
Brineura (cerliponase alfa)

Kuvan (sapropterin dihydrochloride)
Naglazyme (galsulfase)

Palynziq (pegvaliase-pqpz)
Vimizim (elosulfase alpha)

Indication

MPS I (3)
CLN2 (4)
PKU (5)
MPS VI (7)
PKU (8)
MPS IVA (9)

United States
Orphan
Drug
Exclusivity
Expiration (1)
Expired
2024

Expired
Expired

2025
2021

United
States
Biologic
Exclusivity
Expiration (2)
Expired
2029

Not Applicable
Expired

2030
2026

European
Union
Orphan Drug
Exclusivity
Expiration (1)
Expired
2027
2020 (6)
Expired

2029
2024

(1) See “Government Regulation—Orphan Drug Designation” in this Annual Report on Form 10-K for further discussion

(2) See “Government Regulation—Healthcare Reform” in this Annual Report on Form 10-K for further discussion

(3) For the treatment of Mucopolysaccharidosis I (MPS I)

(4) For the treatment of late infantile neuronal ceroid lipofuscinosis type 2 (CLN2)

(5) For the treatment of phenylketonuria (PKU)

(6) Kuvan, a small molecule therapy, has been granted orphan drug status in the European Union (EU), which together with pediatric exclusivity, confers 12

years of market exclusivity in the EU that expires in December 2020

(7) For the treatment of Mucopolysaccharidosis VI (MPS VI)

(8) For adult patients with PKU

(9) For the treatment of Mucopolysaccharidosis IV Type A (MPS IVA)

A summary of our ongoing major development programs, including key metrics, is provided below:

Major Product Candidates
in Development
Valoctocogene roxaparvovec

Vosoritide
BMN 307

Target
Indication
Severe Hemophilia A

Achondroplasia
PKU

U.S. Orphan
Designation
Yes

Yes
Yes

EU Orphan
Designation
Yes

Yes
Yes

Stage

Clinical Phase 3

Clinical Phase 3
Clinical Phase 1/2 (1)

(1) We expect to start dosing patients in a Phase 1/2 study in the first quarter of 2020. See “Major Product Candidates—BMN 307” in this Annual Report on

Form 10-K for further discussion.

See “Patents and Proprietary Rights” in this Annual Report on Form 10-K for additional information on our market protection.

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Recent Developments

Regulatory Review of Valoctocogene Roxaparvovec for the Treatment of Severe Hemophilia A

On February 20, 2020, we announced that the U.S. Food and Drug Administration (FDA) accepted for priority review our Biologics License Application
(BLA) for valoctocogene roxaparvovec for the treatment of adults with severe hemophilia A. The Prescription Drug User Fee Act (PDUFA) target action date for
the BLA has been set for August 21, 2020. On December 23, 2019, we announced that the European Medicines Agency (EMA) validated our Marketing
Authorisation Application (MAA) for valoctocogene roxaparvovec, which has been in review under accelerated assessment since January 2020. The
submissions are based on our Phase 3 interim analysis and the three-year Phase 1/2 data of patients treated with valoctocogene roxaparvovec. Both
submissions represent the first time a gene therapy product for any type of hemophilia indication is under review for marketing authorization by health
authorities. See “Major Product Candidates in Development — Valoctocogene Roxaparvovec” in this Annual Report on Form 10-K for more information
regarding valoctocogene roxaparvovec.

Gene Therapy Product Candidate BMN 307 for the Treatment of PKU

BMN 307 is a gene therapy product candidate that is designed to normalize blood phenylalanine (Phe) concentration levels in patients with PKU. On

January 13, 2020, we announced that both the FDA and Medicines and Healthcare Products Regulatory Agency (MHRA) in the United Kingdom (U.K.) granted
Investigational New Drug (IND) status and approved our Clinical Trial Application (CTA), respectively, for BMN 307. We expect to start dosing patients in
PHEARLESS, a Phase 1/2 study of BMN 307, in the first quarter of 2020 using product made at commercial scale from our gene therapy manufacturing facility.

Product Candidate Vosoritide for the Treatment of Achondroplasia

On November 14, 2019, we provided an update on our development of vosoritide for the treatment of children with achondroplasia, the most common

form of disproportionate short stature in humans. We announced that children in a cohort of our open-label Phase 2 study of vosoritide over 54 months
achieved a statistically significant cumulative additional mean height gain of 9.0 cm compared to children, matched for age and gender, in a natural history
achondroplasia dataset. On December 16, 2019, we announced positive results from our completed global Phase 3 randomized, double-blind, placebo-
controlled study of vosoritide in approximately 121 children with achondroplasia ages 5-14 for 52 weeks. The placebo-adjusted increased change from baseline
in growth velocity after one year of treatment with vosoritide, the primary endpoint, was 1.6 cm/yr. Based on these results, we plan to meet with health
authorities in the first half of 2020 to discuss plans for submitting marketing applications in 2020. See “Major Product Candidates in Development — Vosoritide”
in this Annual Report on Form 10-K for more information regarding vosoritide.

Gene Therapy Product Candidate BMN 331 for the Treatment of Hereditary Angioedema

On November 14, 2019, we announced our third gene therapy product candidate, BMN 331, for hereditary angioedema. We expect to begin IND-

enabling studies for BMN 331 in early to mid-2020.

Summary of Commercial Products and Development Programs

Major Commercial Products

Net Product Revenues related to our major commercial products consisted of the following (in millions):

Major Commercial Products

Aldurazyme
Brineura

Kuvan
Naglazyme

Palynziq
Vimizim

Years Ended December 31,

2019

2018

2017

$97.8
$72.0

$463.4
$374.3

$86.9
$544.3

$135.1
$39.9

$433.6
$345.9

$12.2
$482.0

$90.0
$8.6

$407.5
$332.2

—   
$413.3

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Table of Contents

Aldurazyme

Aldurazyme is a highly purified protein that is designed to be identical to a naturally occurring form of the human enzyme alpha-L-iduronidase, a

lysosomal enzyme normally required for the breakdown of glycosaminoglycans (GAGs). Aldurazyme is approved for marketing in the U.S., the EU and other
international markets for patients with MPS I. MPS I is a progressive and debilitating life-threatening genetic disease, for which no other drug treatment
currently exists, that is caused by the deficiency of alpha-L-iduronidase. Patients with MPS I typically become progressively worse and experience multiple
severe and debilitating symptoms resulting from the build-up of carbohydrate residues in all tissues in the body. These symptoms include: inhibited growth,
delayed and regressed mental development (in the severe form of the disease), enlarged liver and spleen, joint deformities and reduced range of motion,
impaired cardiovascular function, upper airway obstruction, reduced pulmonary function, frequent ear and lung infections, impaired hearing and vision, sleep
apnea, malaise and reduced endurance.

We developed Aldurazyme through collaboration with Genzyme Corporation (Genzyme), now a wholly owned subsidiary of Sanofi. Under our

collaboration agreement with Genzyme, we are responsible for manufacturing Aldurazyme and supplying it to Genzyme. We receive payments ranging from
39.5% to 50% on worldwide net Aldurazyme sales by Genzyme depending on sales volume. Genzyme and we are members of BioMarin/Genzyme LLC, a
50/50 limited liability company (the BioMarin/Genzyme LLC) that: (1) holds the intellectual property relating to Aldurazyme and other collaboration products and
licenses all such intellectual property on a royalty-free basis to us and Genzyme to allow us to exercise our rights and perform our obligations under the
agreements related to the BioMarin/Genzyme LLC, and (2) engages in research and development activities that are mutually selected and funded by Genzyme
and us.

Brineura

Brineura is a recombinant human tripeptidyl peptidase 1 (TPP1) and is approved for the treatment of patients with CLN2, a form of Batten disease, in
the U.S., the EU and other international markets. CLN2 is an incurable, rapidly progressive disease that ends in patient death by 10-12 years of age. Patients
are initially healthy but begin to decline at approximately the age of three. We estimate that up to 1,200 to 1,600 cases exist worldwide. On April 27, 2017,
Brineura was approved in the U.S. to slow the progression of loss of ambulation in symptomatic pediatric patients three years of age and older with CLN2.
Brineura is the first treatment approved to slow the progression of loss of ambulation in children with CLN2 disease.

On June 1, 2017, we announced that the EC granted marketing authorization for Brineura in the EU to treat children with CLN2. Brineura is the first

treatment approved in the EU for the treatment of CLN2, and the marketing authorization for Brineura includes all 28 countries of the EU, Norway, Iceland and
Liechtenstein. On April 21, 2017, the CHMP, the scientific committee of the EMA adopted a positive opinion for our MAA for Brineura following an accelerated
review procedure, reserved for medicinal products expected to be a major public health interest. Brineura was one of the first therapies to go through this
process.

Brineura is administered via intracerebroventricular (ICV) infusion and intended to be used in combination with a delivery device, such as an injector

or other delivery system. Please see “Government Regulation – Combination Products” in this Annual Report on Form 10-K for additional information on
combination products.

Kuvan

Kuvan is a proprietary synthetic oral form of 6R-BH4, a naturally occurring enzyme co-factor for phenylalanine hydroxylase (PAH), indicated for

patients with PKU. Kuvan is the first drug for the treatment of PKU, which is an inherited metabolic disease that affects at least 50,000 diagnosed patients
under the age of 40 in the developed world. We believe that approximately 30% to 50% of those with PKU could benefit from treatment with Kuvan. PKU is
caused by a deficiency of activity of an enzyme, PAH, which is required for the metabolism of Phe. Phe is an essential amino acid found in all protein-
containing foods. Without sufficient quantity or activity of PAH, Phe accumulates to abnormally high levels in the blood, resulting in a variety of serious
neurological complications, including severe mental retardation and brain damage, mental illness, seizures and other cognitive problems. As a result of
newborn screening efforts implemented in the 1960s and early 1970s, virtually all PKU patients under the age of 40 in developed countries have been
diagnosed at birth. Currently, PKU can be managed by a Phe-restricted diet, which is supplemented by nutritional replacement products, like formulas and
specially manufactured foods; however, it is difficult for most patients to adhere to the strict diet to the extent needed for achieving adequate control of blood
Phe levels.

Kuvan tablets were granted marketing approval for the treatment of PKU in the U.S. in December 2007 and in the EU in December 2008. In
December 2013, the FDA approved the use of Kuvan powder for oral solution that is provided in a dose sachet packet allowing faster dissolution of powder in
solution compared to the current tablet form. We commenced the commercial launch of this new form of Kuvan in February 2014. We market Kuvan in the
U.S., the EU and other international markets (excluding Japan). In certain international markets, Kuvan is also approved for, or is only approved for, the
treatment of primary BH4 deficiency, a different disorder than PKU.

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Two companies previously filed paragraph IV certifications and submitted abbreviated new drug applications (ANDAs) to produce sapropterin

dihydrochloride tablets and powder and we subsequently entered into settlement agreements regarding Kuvan with both companies. We expect generic
versions of Kuvan to first become available in the U.S. in the fourth quarter of 2020. Please see “Risk Factors” included in Part I, Item 1A of this Annual Report
on Form 10-K for more information regarding the settlement agreements and for a discussion of the risks posed by generic versions of Kuvan. Please see
“Government Regulation – The Hatch-Waxman Act” in this Annual Report on Form 10-K for additional information regarding ANDAs.

Naglazyme

Naglazyme is a recombinant form of N-acetylgalactosamine 4-sulfatase (arylsulfatase B) indicated for patients with MPS VI. MPS VI is a debilitating

life-threatening genetic disease for which no other drug treatment currently exists and is caused by the deficiency of arylsulfatase B, an enzyme normally
required for the breakdown of certain complex carbohydrates known as GAGs. Patients with MPS VI typically become progressively worse and experience
multiple severe and debilitating symptoms resulting from the build-up of carbohydrate residues in tissues in the body. These symptoms include: inhibited
growth, spinal cord compression, enlarged liver and spleen, joint deformities and reduced range of motion, skeletal deformities, impaired cardiovascular
function, upper airway obstruction, reduced pulmonary function, frequent ear and lung infections, impaired hearing and vision, sleep apnea, malaise and
reduced endurance.

Naglazyme is approved for marketing in the U.S., the EU and other international markets.

Palynziq

Palynziq is a PEGylated recombinant phenylalanine ammonia lyase enzyme, which is delivered through subcutaneous injection to reduce blood Phe
concentrations. On May 24, 2018, the FDA approved the use of Palynziq in adult patients with PKU who have uncontrolled blood Phe concentrations greater
than 600 micromol/L (10mg/dL) on existing management. Palynziq is our second approved treatment for PKU. Palynziq is only available in the U.S. through the
Palynziq Risk Evaluation and Mitigation Strategy (REMS) program, which is required by the FDA to mitigate the risk of anaphylaxis while using the product.
Notable requirements of our REMS program include the following:

•

•

•

•

•

prescribers must be certified by enrolling in the REMS program and completing training;

prescribers must prescribe auto-injectable epinephrine with Palynziq;

pharmacies must be certified with the REMS program and must dispense Palynziq only to patients who are authorized to receive it;

patients must enroll in the REMS program and be educated about the risk of anaphylaxis by a certified prescriber to ensure they understand
the risks and benefits of treatment with Palynziq; and

patients must have auto-injectable epinephrine available at all times while taking Palynziq.

Please see “Risk Factors” included in Part I, Item 1A of this Annual Report on Form 10-K for a discussion of the risks posed by the REMS program.

On May 6, 2019, we announced that the European Commission (EC) granted marketing authorization for Palynziq in the EU, at doses of up to 60 mg

once daily, to reduce Phe concentrations in patients with PKU aged 16 and older who have inadequate blood Phe control (blood Phe levels greater than 600
micromol/L) despite prior management with available treatment options.

Vimizim

Vimizim is an enzyme replacement therapy for the treatment of MPS IVA, a lysosomal storage disorder. MPS IVA is a disease characterized by

deficient activity of N-acetylgalactosamine-6-sulfatase (GALNS) causing excessive lysosomal storage of glycosaminoglycans such as keratan sulfate and
chondroitin sulfate. This excessive storage causes a systemic skeletal dysplasia, short stature, and joint abnormalities, which limit mobility and endurance.
Malformation of the chest impairs respiratory function, and looseness of joints in the neck cause spinal instability and potentially spinal cord compression.
Other symptoms may include hearing loss, corneal clouding, and heart disease. Initial symptoms often become evident in the first five years of life. The disease
substantially limits both the quality and length of life of those affected. We have identified over 2,000 patients worldwide suffering from MPS IVA and estimate
that the total number of patients suffering from MPS IV A worldwide could be as many as 3,000.

Vimizim is approved for marketing in the U.S., the EU and other international markets.

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Major Product Candidates in Development

Valoctocogene Roxaparvovec

Valoctocogene roxaparvovec is an adeno associated virus (AAV5) vector drug development candidate designed to restore factor VIII plasma

concentrations in patients with severe hemophilia A. Hemophilia A, also called factor VIII deficiency or classic hemophilia, is a genetic disorder caused by
missing or defective factor VIII, a clotting protein. According to the World Federation of Hemophilia rankings of severity of hemophilia A, the normal range of
factor VIII activity levels is between 50% and 150%, expressed as a percentage of normal factor activity in blood, the mild hemophilia A range of factor VIII
activity levels is between 5% and 40%, the moderate hemophilia A range of factor VIII activity levels is between 1% and 5%, and the severe hemophilia range
of factor VIII activity levels is less than 1%. People living with hemophilia A are not able to form blood clots efficiently and are at risk for excessive bleeding from
modest injuries, potentially endangering their lives. People with severe hemophilia often bleed spontaneously into their muscles or joints.

On February 20, 2020, we announced that the FDA accepted for priority review our BLA for valoctocogene roxaparvovec for the treatment of adults
with severe hemophilia A. The PDUFA target action date for the BLA has been set for August 21, 2020. On December 23, 2019, we announced that the EMA
validated our MAA for valoctocogene roxaparvovec, which has been in review under accelerated assessment since January 2020. The submissions are based
on our Phase 3 interim analysis and the three-year Phase 1/2 data of patients treated with valoctocogene roxaparvovec, described below. Both submissions
represent the first time a gene therapy product for any type of hemophilia indication is under review for marketing authorization by health authorities.

On May 28, 2019, we announced a three-year update to our previously reported results from the Phase 1/2 dose-escalation study for valoctocogene
roxaparvovec in patients with severe hemophilia A, which demonstrated that bleed rate control with the 6e13 vg/kg dose was maintained for a third year with a
median Annualized Bleed Rate (ABR) of 0 and mean ABR of 0.7 in that year. In addition, factor VIII levels in the 6e13 vg/kg dose appeared to be approaching
a plateau in year three. Factor VIII levels measured with the chromogenic substrate (CS) assay at the end of year three were mean and median of 32.7
international units per deciliter (IU/dL) and 19.9 IU/dl, respectively, compared with mean and median of 36.4 IU/dL and 26.2 IU/dL, respectively, at the end of
year two. In January 2020, the New England Journal of Medicine (NEJM) published results from the three-year update from the Phase 1/2 study.

The global Phase 3 study program with valoctocogene roxaparvovec includes two studies, one with the 6e13 vg/kg dose (GENEr8-1) and one with the

4e13 vg/kg dose (GENEr8-2). In July 2019, we announced the discontinuation of the GENEr8-2 study given the overwhelming preference by patients to be
treated with the 6e13 vg/kg dose. The GENEr8-1 study is an open-label single-arm study to evaluate the efficacy and safety of valoctocogene roxaparvovec as
well as evaluate superiority of the product candidate compared to standard of care. The primary endpoint is based on the factor VIII activity level achieved
following treatment with valoctocogene roxaparvovec, and the secondary endpoint measures annualized factor VIII replacement therapy use rate and ABR. We
announced on May 28, 2019 that data from a 20-patient cohort of the Phase 3 GENEr8-1 study achieved pre-specified clinical criteria for regulatory review in
the U.S. and Europe. As of May 28, 2019, eight patients in the cohort achieved factor VIII levels of 40 or more IU/dL using the CS assay at 23 to 26 weeks,
meeting the pre-specified criteria for factor VIII activity levels. As of the April 30, 2019 data cutoff, between weeks 23 to 26, seven of 16 study participants in the
cohort reached or exceeded the pre-specified factor VIII levels of 40 IU/dL using the CS assay. Subsequent to the April 30, 2019 cutoff, one additional
participant met that criteria, bringing the total to eight participants. For the 16 patients who had reached week 26 since administration of valoctocogene
roxaparvovec by the April 30, 2019 cutoff, the estimated median ABR was zero and the estimated mean ABR was 1.5, representing a reduction of 85% from
baseline levels where all patients were on standard of care. In addition, there was a 98% reduction in median annualized factor VIII usage and a 94% reduction
in mean factor VIII usage annualized between weeks 5 and 26. Between weeks 23 and 26, the mean factor VIII level using the CS assay was 36 IU/dL and the
median was 33 IU/dl. We have dosed 134 study participants in the full GENEr8-1 study and the 52-week results are anticipated in the first quarter of 2021.

In addition to the global Phase 3 GENEr8-1 study, we are also conducting a Phase 1/2 study with the 6E13kg/vg dose of valoctocogene roxaparvovec

in approximately 10 participants with pre-existing AAV5 antibodies. In May 2018, we announced that we dosed the first patient in the Phase 1/2 study (BMN
270-203) evaluating our investigational gene therapy, valoctocogene roxaparvovec, in severe hemophilia A patients with pre-existing AAV5 antibodies. An
additional and separate study to evaluate seroprevalence in people with severe hemophilia A is ongoing around the world.

Overall, valoctocogene roxaparvovec continues to have a favorable safety profile and has been generally well tolerated by participants across all

doses in the Phase 1/2 and Phase 3 studies. No participants have developed inhibitors to factor VIII or withdrawn from a study, and all participants have
remained off factor VIII prophylaxis. Corticosteroid use has been transient with no long-lasting clinical results, and no participants have developed thrombotic
events. The most common adverse events associated with valoctocogene roxaparvovec across studies include transient infusion associated reactions and
transient, asymptomatic, and mild to moderate raised levels of certain proteins and enzymes measured in liver function tests.

Valoctocogene roxaparvovec has Orphan Drug designation from the FDA and the EMA. Valoctocogene roxaparvovec has also been accepted for

Priority Medicines (PRIME) scheme from the EMA. Additionally, the FDA has granted valoctocogene roxaparvovec Breakthrough Therapy designation.

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Vosoritide

Vosoritide is an investigational, once daily injection analog of C-type Natriuretic Peptide (CNP) in development for the treatment of achondroplasia, the

most common form of disproportionate short stature in humans. Vosoritide has been and is being tested only in children in the age range when their growth
plates are still open, which is approximately 25% of people with achondroplasia. In June 2019, the NEJM published results from our Phase 2 open-label, dose-
finding and extension study for vosoritide in children aged 5 to 14 years with achondroplasia receiving a continuous dose of 15 µg/kg/day. Annualized growth
velocity increased from baseline in all cohorts during each 12-month interval by 1.10 to 2.34 cm/year through 42 months. In cohort 3, which received 15 μg/kg
continuous dosing from baseline, the mean annualized growth velocity derived between 30 and 42 months was 5.51 cm/year, representing a 1.46 cm/year
change from baseline. On November 14, 2019, we announced that children in cohort 3 over 54 months achieved a statistically significant cumulative additional
mean height gain of 9.0 cm compared to children, matched for age and gender, in a natural history achondroplasia dataset. In the global Phase 2 study of
children with achondroplasia ages 0-5, enrollment of the first cohort of 24-60 months is complete and the second and third cohorts (six- to 24 months and 0- to
six-months, respectively) are actively enrolling.

On December 16, 2019, we announced positive results from our completed global Phase 3 randomized, double-blind, placebo-controlled study of

vosoritide in approximately 121 children with achondroplasia ages 5-14 for 52 weeks. The placebo-adjusted increased change from baseline in growth velocity
after one year of treatment with vosoritide, the primary endpoint, was 1.6 cm/yr. Based on these results, we plan to meet with health authorities in the first half
of 2020 to discuss plans for submitting marketing applications in 2020.

Overall, vosoritide continues to have a favorable safety profile and has been generally well tolerated by participants across the Phase 2 and Phase 3

studies with no clinically significant blood pressure changes and a mild side effect profile.

Vosoritide has Orphan Drug designation from the FDA and the EMA.

Additionally, on November 14, 2019, we announced that vosoritide will be studied in broader genetic statural abnormalities, starting with dominantly
inherited short stature (DISS), as part of a research collaboration with Children’s National Hospital. We expect the trial with vosoritide for DISS to begin mid-
2020.

BMN 307

BMN 307 is an AAV5 mediated gene therapy that is designed to normalize blood Phe concentration levels in patients with PKU. We tested a broad

range of vector constructs and combinations to optimize the vector and increase potency, resulting in a 10-fold increase in potency for the selected vector.
Treatment of mice in a validated PKU mouse model with BMN 307 showed a lifetime normalization of Phe and normalized neurotransmitter levels. On January
13, 2020, we announced that both the FDA and MHRA in the U.K. granted IND status and approved its CTA, respectively, for BMN 307. We expect to start
dosing patients in PHEARLESS, a Phase 1/2 study of BMN 307, in the first quarter of 2020 using product made at commercial scale from our gene therapy
manufacturing facility.

BMN 307 has Orphan Drug designation from the FDA and the EMA.

Manufacturing

We manufacture the active pharmaceutical ingredients (API) for Aldurazyme, Naglazyme, Palynziq, Vimizim and vosoritide in our production facilities

located in Novato, California. We currently also manufacture the API for Brineura and Vimizim in our manufacturing facility in Shanbally, Cork, Ireland. These
facilities have demonstrated compliance with current Good Manufacturing Practices (cGMPs) to the satisfaction of the FDA, the EC and health agencies in
other countries for the commercial production of these products. Vialing and most packaging are performed by contract manufacturers. We believe that with our
Novato, California facility and our Shanbally facility, we have ample manufacturing capacity to support anticipated commercial demand for Aldurazyme,
Brineura, Naglazyme, Palynziq and Vimizim for at least the next five years.

Kuvan tablets and powder sachets and Palynziq are currently manufactured on a contract basis by third parties. In general, we expect to continue to
contract with outside service providers for certain manufacturing services, including drug substance, API, final product vialing, tableting and sachet production
and packaging operations for our products. All of our facilities and those of any third-party manufacturers will be subject to periodic inspections confirming
compliance with applicable law and must pass inspection before we can manufacture our drugs for commercial sales. Third-party manufacturers’ facilities are
subject to periodic inspections to confirm compliance with applicable law and must be cGMP certified. We believe that our current agreements with third-party
manufacturers and suppliers provide for ample operating capacity to support the anticipated clinical and commercial demand for these products. In certain
instances, there is only one approved contract manufacturer for certain aspects of the manufacturing process. In such cases, we attempt to prevent disruption
of supplies through supply agreements, maintaining safety stock and other appropriate strategies.

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In July 2017, we commissioned our commercial-scale gene therapy manufacturing facility, located in Novato, California, where we conduct cGMP

production of valoctocogene roxaparvovec and BMN 307 to support clinical development activities and anticipated commercial demand. This facility has the
potential to manufacture 10,000 gene therapy doses annually, depending on dose and production mix of valoctocogene roxaparvovec and BMN 307. The
facility’s production process was developed in accordance with International Conference on Harmonisation Technical Requirements for Registration of
Pharmaceuticals for Human Use facilitating worldwide registration with health authorities.

Raw Materials

Raw materials and supplies required for the production of our products and product candidates are available in some instances from one supplier and

in other instances from multiple suppliers. In those cases where raw materials are only available through one supplier, such supplier may be either a sole
source (the only recognized supply source available to us) or a single source (the only approved supply source for us among other sources). We have adopted
policies to attempt, to the extent feasible, to minimize our raw material supply risks, including maintenance of greater levels of raw materials inventory and
implementation of multiple raw materials sourcing strategies, especially for critical raw materials. Although to date we have not experienced any significant
delays in obtaining any raw materials from our suppliers, we cannot provide assurance that we will not face shortages from one or more of them in the future.

Sales and Marketing

We have established a commercial organization, including a sales force, to support our product lines directly in the U.S., Europe, South America and

certain other significant markets. For other selected markets, we have signed agreements with other companies to act as distributors of Brineura, Kuvan,
Naglazyme and Vimizim. Most of these agreements generally grant the distributor the right to market the product in the territory and the obligation to secure all
necessary regulatory approvals for commercial or named patient sales. Additional markets are being assessed at this time and additional agreements may be
signed in the future.

Genzyme has the exclusive right to distribute, market and sell Aldurazyme globally and is required to purchase its requirements exclusively from us.

In the U.S., our products (other than Aldurazyme) are marketed through our commercial teams, including sales representatives and supporting staff

members, who promote our products, directly to physicians in specialties appropriate for each product. Outside of the U.S., our sales representatives and
supporting staff members market our products (other than Aldurazyme). We believe that with moderate changes in 2020, the size of our sales force will be
appropriate to effectively reach our target customers in markets where our products are directly marketed. The launch of any future products, if approved, will
likely require expansion of our commercial organization, including our sales force, in the U.S. and abroad.

We utilize third-party logistics companies to store and distribute our products. Moreover, we use third-party vendors, such as advertising agencies,

market research firms and suppliers of marketing and other sales support-related services, to assist with our commercial activities.

Customers

Our Brineura, Kuvan, Naglazyme, and Vimizim customers include a limited number of specialty pharmacies and end-users, such as hospitals and

foreign government agencies. We also sell Brineura, Kuvan, Naglazyme and Vimizim to our authorized distributors and to certain larger pharmaceutical
wholesalers globally, which act as intermediaries between us and end-users and generally do not stock significant quantities of our products. However, in
certain countries, such as those in Latin America, governments place large periodic orders for Naglazyme and Vimizim. The timing of these orders can be
inconsistent and can create significant quarter to quarter variation in our revenue. Palynziq is currently distributed in the U.S. pursuant to the REMS program
through a limited number of certified specialty pharmacies. During 2019, 43% of our net product revenues, excluding Aldurazyme, was generated by three
customers. Genzyme is our sole customer for Aldurazyme and is responsible for marketing and selling Aldurazyme to third parties.

Competition

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The biopharmaceutical industry is rapidly evolving and highly competitive. Within the industry, there are many public and private companies, including

pharmaceutical companies and biotechnology companies that have or may soon initiate programs for the same indications that our products and product
candidates are intended to treat. Furthermore, universities and non-profit research organizations may have research programs, both early-stage and clinical, in
the same disease areas. Our competitors may have advantages over us due to greater financial or scientific resources, lower labor and other costs, or due to
higher headcount and more robust organizational structures. Our competitors have considerable experience in drug manufacturing, preclinical and clinical
research, regulatory affairs, marketing, sales, and distribution. They pursue broad patent portfolios and other intellectual property to protect the products they
are developing. Their products may outcompete ours due to one or more factors, including faster progress through preclinical and clinical development, lower
manufacturing costs, superior safety and efficacy, lower pricing, stronger patent protection, and better marketing, sales, and distribution capabilities. In this
event, our products and product candidates, if approved, could fail to gain significant market share, and as a result, our business, financial condition and results
of operations could be adversely affected.

Our products and product candidates have no direct approved competition currently on the market in the U.S. or the EU, however, other companies

are in the development phase with new and generic products. Our products and product candidates have potential competition from products under
development either using similar technology to our programs or different treatment strategies. The following is a summary of some of the primary possible
future competitors for our products and product candidates, but the information below may not include all potential competition.

Products

Aldurazyme, Naglazyme, and Vimizim

In the mucopolysaccharidosis field, several companies are researching treatments using small molecules, gene therapy, and other novel technologies.

Aldurazyme, for the treatment of MPS I, has potential competition from clinical stage product candidates from ArmaGen, Inc., JCR Pharmaceuticals Co., Ltd.,
Orchard Therapeutics Plc, RegenxBio Inc., and earlier stage product candidates, including a product candidate from Immusoft Corporation. Naglazyme, for the
treatment of MPS VI, has potential competition from a clinical stage product candidate from Inventiva S.A. and other potential candidates in earlier stages.
Vimizim, for the treatment of MPS IVA, has potential competition from a preclinical stage product candidate from Esteve Pharmaceuticals, S.A. and other
potential candidates in earlier stages.

Brineura

Brineura, for the treatment of CLN2, has potential competition from preclinical product candidates from RegenxBio Inc. and Spark Therapeutics, Inc.

Kuvan and Palynziq

There are currently no other approved drugs on the market in the U.S. or the EU for the treatment of PKU. However, two companies previously filed

paragraph IV certifications and submitted ANDAs to produce sapropterin dihydrochloride tablets and powder. We entered into settlement agreements regarding
Kuvan with both companies, which will allow these companies to market generic versions of sapropterin dihydrochloride. We expect generic versions of Kuvan
to first become available in the U.S. in the fourth quarter of 2020. Please see “Risk Factors” included in Part I, Item 1A of this Annual Report on Form 10-K for
more information regarding the settlement agreements and for a discussion of the risks posed by generic versions of Kuvan in the U.S. and abroad. Please see
“Government Regulation – The Hatch-Waxman Act” in this Annual Report on Form 10-K for additional information regarding ANDAs. Kuvan and Palynziq also
have potential competition from clinical stage product candidates from Censa Pharmaceuticals, Inc., Homology Medicines, Inc., Nestle Health Science, S.A.,
Rubius Therapeutics, Inc., Synlogic, Inc. and earlier stage product candidates, including product candidates from Generation Bio Co., LogicBio Therapeutics,
Inc., Moderna Therapeutics, Inc. and Sangamo Therapeutics, Inc. BMN 307 is our preclinical gene therapy program for PKU, and other companies are also
developing gene therapy product candidates for PKU, as described in “Competition—Product Candidates—BMN 307” in this Annual Report on Form 10-K.

Product Candidates

Valoctocogene roxaparvovec

Valoctocogene roxaparvovec, a gene therapy product candidate for severe hemophilia A, could have competition from marketed recombinant factor

VIII replacement therapies, a novel bispecific antibody marketed by Roche Holding Ltd, and clinical stage programs, including gene therapy product candidates
under development by Bayer AG, Pfizer, Inc., Roche Holding Ltd, Sangamo Therapeutics, Inc., Takeda Pharmaceutical Company Ltd. and preclinical product
candidates from other companies, including Freeline Therapeutics Ltd. and Uniqure N.V. In addition, Novo Nordisk A/S, Pfizer, Inc. and Sanofi S.A. are
developing

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novel non-factor replacement product candidates in the clinic for the treatment of hemophilia A.

Vosoritide

Vosoritide, for the treatment of achondroplasia, could have competition from clinical stage products under development by Ascendis Pharma A/S and

Pfizer, Inc., and preclinical product candidates from other companies, including QED Therapeutics, Inc.

BMN 307

BMN 307, a gene therapy product candidate for the treatment of PKU, has potential competition from clinical stage product candidates from Censa

Pharmaceuticals, Inc., Homology Medicines, Inc., Nestle Health Science, S.A., Rubius Therapeutics, Inc., Synlogic, Inc. and earlier stage product candidates,
including product candidates from Generation Bio Co., LogicBio Therapeutics, Inc., Moderna Therapeutics, Inc. and Sangamo Therapeutics, Inc.

Patents and Proprietary Rights

Our success depends on an intellectual property portfolio that supports our future revenue streams and also erects barriers to our competitors. We are

maintaining and building our patent portfolio through: filing new patent applications; prosecuting existing applications; and licensing and acquiring new patents
and patent applications. Furthermore we seek to protect our ownership of know-how, trade secrets and trademarks through an active program of legal
mechanisms including registrations, assignments, confidentiality agreements, material transfer agreements, research collaborations and licenses.

As of January 23, 2020, the number of our worldwide issued patents now stands at 1,680, including 134 patents issued by the U.S. Patent and
Trademark Office (the USPTO). Furthermore, our portfolio of pending patent applications totals 463 applications, including 71 pending U.S. applications.

With respect to Aldurazyme, we have rights to 31 issued patents, including four U.S. patents. These patents cover our ultra-pure alpha-L-iduronidase
composition of Aldurazyme, methods of treating deficiencies of alpha-L-iduronidase by administering pharmaceutical compositions comprising such ultra-pure
alpha-L-iduronidase, a method of purifying such ultra-pure alpha-L-iduronidase and the use of compositions of ultra-pure biologically active fragments of alpha-
L-iduronidase. The last-to-expire Aldurazyme patent will expire in November 2020.

With respect to Brineura, we own or have licensed a number of patents and pending patent applications that relate generally to CLN2/TPP1 protein,
use of CLN2/TPP1 protein and methods of treating late infantile neuronal ceroid lipofuscinosis, pharmaceutical compositions and liquid formulations of TPP1
formulations and intrathecal administration of TPP1. We have 7 issued patents, including five issued U.S. patents and eight foreign patents, and 20 pending
applications including two U.S. and 18 foreign applications. These patents will expire between 2021 and 2036.

With respect to Palynziq, we own or have licensed a number of patents and pending patent applications that relate generally to pegylated and variant
forms of Anabaena variabilis phenylalanine ammonia lyase (AvPAL), use of pegylated and variant forms of AvPAL in treating diseases caused all or in part by a
deficiency in PAH, including PKU, methods of production and purification, and methods of detecting pegylated AvPAL and AvPAL-specific antibodies. We have
159 issued patents, including six issued U.S. patents and 153 foreign patents, and 17 pending applications including four U.S. and 13 foreign applications.
These patents will expire between 2026 and 2031.

With respect to Kuvan, we own, co-own or have licensed a number of patents and pending patent applications that relate generally to formulations

and forms of our drug substance, methods of use for various indications under development and dosing regimens. We have rights to 118 issued patents
including 17 issued U.S. patents with claims to a stable tablet and oral solution formulation of 6R-BH4, methods of treating PKU using a once daily dosing
regimen, methods of administration of Kuvan with food, crystalline forms of 6R-BH4, and methods of producing 6R-BH4. These patents will expire between
2024 and 2032 (dry blend formulation in the U.S.). We have granted licenses to certain of these patents to two companies, as further described in “Major
Commercial Products—Kuvan” in this Annual Report on Form 10-K .

With respect to Naglazyme, we have 54 issued patents, including three U.S. patents. Claims cover our ultrapure N -acetylgalactosamine-4-sulfatase

compositions of Naglazyme, methods of treating deficiencies of N -acetylgalactosamine-4-sulfatase, including MPS VI, methods of producing and purifying
such ultrapure N -acetylgalactosamine-4-sulfatase compositions and methods of detecting. These patents will expire between 2021 and 2028.

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With respect to Vimizim, we own or have licensed a number of patents and pending patent applications that relate generally to compositions of matter,

methods of use and methods of production. We have rights to 202 issued patents including 13 issued U.S. patents with claims to compositions of purified
recombinant N-acetylgalactosamine-6-sulfate sulfatase (Vimizim) methods of treating Morquio Syndrome and sulfatase-modifying factor I (SUMF1)
polypeptides and nucleic acids used in the manufacture of Vimizim. Issued U.S. patents cover purified recombinant Vimizim compositions (set to expire in
2029) and methods of treating Morquio Syndrome (set to expire in 2029). We also have issued U.S. and European patents that cover methods of production
(set to expire in 2024) and formulations (set to expire in 2031).

With respect to our clinical product candidates, we believe we have the necessary intellectual property rights to allowing us to undertake the
development of these candidates. Certain of our product candidates are in therapeutic areas that have been the subject of many years of extensive research
and development by academic organizations and third parties who may control patents or other intellectual property that they might assert against us, should
one or more of our product candidates in these therapeutic areas succeed in obtaining regulatory approval and thereafter be commercialized. We continually
evaluate the intellectual property rights of others in these areas in order to determine whether a claim of infringement may be made by others against us.
Should we determine that a third party has intellectual property rights that could impact our ability to freely market a compound we consider a number of factors
in determining how best to prepare for the commercialization of any such product candidate. In making this determination we consider, among other things, the
stage of development of our product candidate and whether we and our outside counsel believe the intellectual property rights of others are valid, whether we
infringe the intellectual property rights of others, whether a license is available upon commercially reasonable terms, whether we will seek to challenge the
intellectual property rights of others, and the likelihood of and liability resulting from an adverse outcome should we be found to infringe the intellectual property
rights of others.

Government Regulation

Regulation by governmental authorities in the U.S. and other countries is a significant factor in the development, manufacture, commercialization,
pricing and reimbursement of our products. Our industry is subject to significant federal, state, local and foreign regulation. Our present and future business
has been, and will continue to be, subject to a variety of laws in the U.S. and other jurisdictions. In the U.S., failure to comply with applicable U.S. requirements
may subject a company to a variety of administrative or judicial sanctions, such as FDA refusal to approve pending new drug applications (NDAs) or BLAs,
warning or untitled letters, product recalls, product seizures, total or partial suspension of production or distribution, injunctions, fines, civil penalties, and
criminal prosecution.

Our products require approval from the FDA, the EMA and corresponding agencies in other countries before they can be marketed.

Approval Process in the U.S. and EU

Pharmaceutical product development in the U.S. and the EU typically involves preclinical laboratory and animal tests, the submission to the applicable

regulatory agency of an application (e.g., an IND or a CTA), which must become effective before clinical testing may commence, and adequate and well-
controlled human clinical trials to establish the safety and effectiveness of the drug for each indication for which marketing approval is sought. Currently,
European clinical trial authorization applications must be submitted to the competent authority in each EU Member State in which the trial will be conducted.
Under the new European Regulation on Clinical Trials, which is expected to take effect in 2020, there will be a centralized application procedure where one
national authority takes the lead in reviewing the application and the other national authorities have only a limited involvement. Satisfaction of FDA and
European pre-market approval requirements typically takes many years and the actual time required may vary substantially based upon the type, complexity
and novelty of the product or disease.

Preclinical tests include laboratory evaluation, as well as animal studies, to assess the characteristics and potential pharmacology, pharmacokinetics

and toxicity of the product. The conduct of the preclinical tests must comply with FDA and/or EMA regulations and requirements, including good laboratory
practices. The results of preclinical testing, along with other information, including information about product chemistry, manufacturing and controls and a
proposed clinical trial protocol are submitted to the applicable regulatory agency as part of an IND or CTA. Long-term preclinical tests, such as animal tests of
reproductive toxicity and carcinogenicity, may continue after the IND or CTA is submitted. Until the CTA or IND is approved, or becomes effective following a
waiting period, we may not start the clinical trial in the relevant jurisdiction.

Clinical trials involve the administration of the investigational new drug to healthy volunteers or patients under the supervision of a qualified
investigator. Clinical trials must be conducted in compliance with applicable regulations, good clinical practices (GCP), as well as under protocols detailing the
objectives of the trial and the parameters to be used in monitoring safety and the effectiveness criteria to be evaluated. Each protocol involving testing on
patients and subsequent protocol amendments must be submitted to the FDA as part of the IND and to the relevant regulatory agency in the EU as part of a
new CTA.

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The regulatory agencies may order the temporary halt or permanent discontinuation of a clinical trial at any time or impose other sanctions if they
believe that the clinical trial is not being conducted in accordance with applicable requirements or presents an unacceptable risk to the clinical trial patients.
The study protocol and informed consent information for patients in clinical trials must also be submitted to an institutional review board (IRB) or ethics
committee, for approval. An IRB/ethics committee may also require the clinical trial at the site to be halted, either temporarily or permanently, for failure to
comply with the IRB/ethics committee’s requirements, or may impose other conditions.

Clinical trials to support NDAs, BLAs or MAAs for marketing approval are typically conducted in three sequential phases, but the phases may overlap

or be combined. In Phase 1, the initial introduction of the drug into healthy human subjects or patients, the drug is tested to assess metabolism,
pharmacokinetics, pharmacological actions, side effects associated with increasing doses and, if possible, early evidence on effectiveness. Phase 2 usually
involves trials in a limited patient population, to determine the effectiveness of the drug for a particular indication or indications, dosage tolerance and optimum
dosage, and to identify common adverse effects and safety risks. If a compound demonstrates evidence of effectiveness and an acceptable safety profile in
Phase 2 evaluations, Phase 3 trials are undertaken to obtain the additional information about clinical efficacy and safety in a larger number of patients, typically
at geographically dispersed clinical trial sites. After completion of the required clinical testing, an application is prepared and submitted to the regulatory
agency. Approval of the application by the applicable regulatory agency is required before marketing of the product may begin. In Europe, an MAA is prepared
and, for all orphan designated products, is submitted to the EMA under the centralized application procedure. EC approval of the MAA under the centralized
application procedure results in a single marketing authorization that is valid across the European Economic Area (i.e., the EU as well as Iceland, Liechtenstein
and Norway). The NDA, BLA or MAA must include the results of all preclinical, clinical and other testing, a compilation of data relating to the product’s
pharmacology, chemistry, manufacture and controls and proposed labeling, among other things. In the U.S., each NDA or BLA is subject to a significant user
fee at the time of submission, unless a waiver is granted by the FDA.

The FDA and the EMA initially review the applications for a threshold determination that it is sufficiently complete to permit substantive review,

typically within 30-60 days. The regulatory agency may request additional information rather than accepting an application for filing or validation. Once the
submission is accepted, the applicable agency begins an in-depth review. For the FDA, the review period for standard review applications is typically an
additional ten months and, for priority review of drugs, that is, drugs that the FDA determines address a significant unmet need and represent a significant
improvement over existing therapy, the review period is typically an additional six months in duration. The review process may be extended by the FDA for
three additional months to consider new information submitted during the review or clarification regarding information already provided in the submission. The
FDA may also refer applications for novel products or products that present difficult questions of safety or efficacy to an advisory committee, typically a panel
that includes clinicians and other experts, for review, evaluation and a recommendation as to whether the application should be approved. The FDA is not
bound by the recommendation of an advisory committee, but it generally follows such recommendations. After the FDA evaluates the information provided in
the NDA/BLA, it issues an approval letter, or a complete response letter. A complete response letter outlines the deficiencies in the submission and may require
substantial additional testing or information in order for the FDA to reconsider the application. If and when those deficiencies have been addressed and the
NDA/BLA has been resubmitted, the FDA will re-initiate review. If it is satisfied that the deficiencies have been addressed, the FDA will issue an approval letter.

Under the centralized procedure in the EU, the maximum timeframe for the evaluation of an MAA by the EMA is 210 days. This excludes so-called

clock stops, during which additional written or oral information is to be provided by the applicant in response to questions asked by the CHMP. At the end of the
review period, the CHMP provides an opinion to the EC. If the opinion is favorable, the EC may then adopt a decision to grant marketing authorization. In the
event of a negative opinion, the company may request a re-examination of the application within 15 days of receipt of the negative opinion. The company then
has 60 days to provide the CHMP with detailed grounds for requesting the re-examination. Within 60 days of providing this information, the CHMP shall re-
examine its opinion. The EC follows the recommendation of the CHMP in almost all cases. In exceptional cases, the CHMP might perform an accelerated
review of an MAA in no more than 150 days. This is usually when the product is of major interest from the point of view of public health and, in particular, from
the viewpoint of therapeutic innovation.

During the review period, the FDA and/or the EMA will typically inspect one or more clinical sites and/or the sponsor to assure compliance with GCP

regulations and will inspect the facility or the facilities at which the drug is manufactured to ensure compliance with cGMPs regulations. Neither the FDA nor the
EMA will approve the product unless compliance is satisfactory and the application contains data that provide substantial evidence that the drug is safe and
effective in the indication studied.

A marketing approval authorizes commercial marketing of the drug with specific prescribing information for specific indications. As a condition of NDA

or BLA approval, the FDA may require a risk mitigation and evaluation strategy, to help ensure that the benefits of the drug outweigh the potential risks. Risk
mitigation and evaluation strategies can include medication guides, communication plans for healthcare professionals, and elements to assure safe use, such
as special training or certification for prescribing or dispensing, dispensing only under certain circumstances, special monitoring and the use of patient
registries. Moreover, product approval may require substantial post-approval testing and surveillance to monitor the drug’s safety or efficacy. Once granted,
product approvals may be withdrawn if compliance with regulatory standards is not maintained or problems are identified following initial marketing.

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Combination Products

A combination product is a product comprising (i) two or more regulated components, i.e., drug/device, biologic/device, drug/biologic, or
drug/device/biologic, that are physically, chemically, or otherwise combined or mixed and produced as a single entity; (ii) two or more separate products
packaged together in a single package or as a unit and comprising drug and device products, device and biological products, or biological and drug products;
(iii) a drug, device, or biological product packaged separately that according to its investigational plan or proposed labeling is intended for use only with an
approved individually specified drug, device, or biological product where both are required to achieve the intended use, indication, or effect and where upon
approval of the proposed product the labeling of the approved product would need to be changed, e.g., to reflect a change in intended use, dosage form,
strength, route of administration, or significant change in dose; or (iv) any investigational drug, device, or biological product packaged separately that according
to its proposed labeling is for use only with another individually specified investigational drug, device, or biological product where both are required to achieve
the intended use, indication, or effect.

The FDA is divided into various branches, or Centers, by product type. Different Centers typically review drug, biologic, or device applications. In order

to review an application for a combination product, the FDA must decide which Center should be responsible for the review. FDA regulations require that the
FDA determine the combination product’s primary mode of action, which is the single mode of a combination product that provides the most important
therapeutic action of the combination product. The Center that regulates that portion of the product becomes the lead evaluator. When evaluating an
application, a lead Center may consult other Centers but still retain complete reviewing authority, or it may collaborate with another Center, by which the Center
assigns review of a specific section of the application to another Center, delegating its review authority for that section. Typically, the FDA requires a single
marketing application submitted to the Center selected to be the lead evaluator, although the agency has the discretion to require separate applications to more
than one Center. One reason to submit multiple evaluations is if the applicant wishes to receive some benefit that accrues only from approval under a particular
type of application, like new drug product exclusivity. If multiple applications are submitted, each may be evaluated by a different lead Center.

Disclosure of Clinical Trial Information

Sponsors of clinical trials of FDA-regulated products, including drugs and biologics, are required to register and disclose certain clinical trial
information. Information related to the product, patient population, phase of investigation, study sites and investigators, and other aspects of the clinical trial are
then made public as part of the registration. Sponsors are also obligated to discuss the results of their clinical trials after completion. In certain circumstances,
disclosure of the results of these trials can be delayed for up to two years after the date of completion of the trial. Competitors may use this publicly-available
information to gain knowledge regarding the progress of development programs. Moreover, there is an increasing trend in the EU requiring public disclosure of
development data, in particular clinical trial data. These data were traditionally regarded as confidential commercial information; however, under policies
recently adopted in the EU, clinical study data submitted to the EMA in MAAs, including preclinical data, and patient level data, may be subject to public
disclosure.

The Hatch-Waxman Act

Upon approval of a drug through an NDA, applicants are required to submit to the FDA each patent that covers the applicant’s product or FDA

approved method of using this product. Those patents are then published in the FDA’s Orange Book. Drugs listed in the Orange Book can, in turn, be cited by
potential competitors in support of approval of an ANDA. Generally, an ANDA provides for marketing of a drug product that has the same active ingredients in
the same strength(s), route of administration, and dosage form as the listed drug and has been shown through bioequivalence testing to be therapeutically
equivalent to the listed drug. ANDA applicants are not required to conduct or submit results of preclinical or clinical tests to prove the safety or effectiveness of
their drug product, other than the requirement for bioequivalence testing. Drugs approved in this way are commonly referred to as “generic equivalents” to the
listed drug, and can often be substituted by pharmacists under prescriptions written for the original listed drug.

The ANDA applicant is required to certify to the FDA concerning any patents listed for the approved product in the Orange Book. Specifically, the

applicant must certify that: (i) the required patent information has not been filed; (ii) the listed patent has expired; (iii) the listed patent has not expired, but will
expire on a particular date and approval is sought after patent expiration; or (iv) the listed patent is invalid or will not be infringed by the new product. A
certification that the new product will not infringe the already approved product’s listed patents or that such patents are invalid is called a paragraph IV
certification. If the applicant does not challenge the listed patents, the ANDA application will not be approved until all the listed patents claiming the referenced
product have expired. Alternatively, for a patent covering an approved method of use, an ANDA applicant may submit a statement to the FDA that the company
is not seeking approval for the covered use.

If the ANDA applicant has submitted a paragraph IV certification to the FDA, the applicant must also send notice of the paragraph IV certification to

the NDA and patent holders once the ANDA has been accepted for filing by the FDA. The NDA and patent holders may then initiate a patent infringement
lawsuit in response to the notice of the paragraph IV certification. The filing of a patent infringement lawsuit within 45 days of the receipt of a paragraph IV
certification automatically prevents the FDA from approving the ANDA until the earlier of 30 months, expiration of the patent, settlement of the lawsuit or a
decision in the infringement case that is favorable to the ANDA applicant.

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The ANDA application also will not be approved until any non-patent exclusivity, such as exclusivity for obtaining approval of a new chemical entity,

listed in the Orange Book for the referenced product has expired. Federal law provides a period of five years following approval of a drug containing no
previously approved active moiety, during which ANDAs for generic versions of those drugs cannot be submitted unless the submission contains a paragraph
IV challenge to a listed patent, in which case the submission may be made four years following the original product approval. Federal law provides for a period
of three years of exclusivity following approval of a listed drug that contains previously approved active ingredients but is approved in a new dosage form, route
of administration or combination, or for a new condition of use, the approval of which was required to be supported by new clinical trials conducted by or for the
sponsor, during which the FDA cannot grant effective approval of an ANDA based on that listed drug. Both of the five-year and three-year exclusivity periods,
as well as any unexpired patents listed in the Orange Book for the listed drug, can be extended by six months if the FDA grants the NDA sponsor a period of
pediatric exclusivity based on studies submitted by the sponsor in response to a written request.

Exclusivity for Biologics

The Biologics Price Competition and Innovation Act of 2009 (BPCIA), which was enacted as part of the Patient Protection and Affordable Care Act of

2010, as amended by the Health Care and Education Reconciliation Act of 2010 (as amended, the PPACA), created an abbreviated approval pathway for
biological products that are demonstrated to be “biosimilar” or “interchangeable” with an FDA-licensed reference biological product. Biosimilarity sufficient to
reference a prior FDA-licensed product requires that there be no differences in conditions of use, route of administration, dosage form, and strength, and no
clinically meaningful differences between the biological product and the reference product in terms of safety, purity, and potency. Biosimilarity must be shown
through analytical studies, animal studies, and at least one clinical study, absent a waiver from the Secretary of the U.S. Department of Health and Human
Services. In order to meet the higher hurdle of interchangeability, a sponsor must demonstrate that the biosimilar product can be expected to produce the same
clinical result as the reference product, and for a product that is administered more than once, that the risk of switching between the reference product and
biosimilar product is not greater than the risk of maintaining the patient on the reference product. The first biosimilar product was approved under the BPCIA in
2015, though no interchangeable products have been approved to date. Complexities associated with the larger, and often more complex, structures of
biological products, as well as the process by which such products are manufactured, pose significant hurdles to implementation that are still being evaluated
by the FDA. A reference biologic is granted 12 years of exclusivity from the time of first licensure of the reference product and no application for a biosimilar
can be submitted for four years from the date of licensure of the reference product. The first biologic product submitted under the abbreviated approval
pathway that is determined to be interchangeable with the reference product has exclusivity against a finding of interchangeability for other biologics for the
same condition of use for the lesser of (i) one year after first commercial marketing of the first interchangeable biosimilar, (ii) eighteen months after the first
interchangeable biosimilar is approved if there is not patent challenge, (iii) eighteen months after resolution of a lawsuit over the patents of the reference
biologic in favor of the first interchangeable biosimilar applicant, or (iv) 42 months after the first interchangeable biosimilar’s application has been approved if a
patent lawsuit is ongoing within the 42-month period.

Orphan Drug Designation

Orphan drug designation is granted by the FDA and EMA to drugs intended to treat a rare disease or condition, which in the U.S. is defined as having

a prevalence of less than 200,000 individuals in the U.S. In the EU, orphan drug designation is available if a sponsor can establish: that the medicine is
intended for the diagnosis, prevention or treatment of (1) a life-threatening or chronically debilitating condition affecting no more than five in 10,000 people in
the EU, which is equivalent to around 250,000 people or fewer, or (2) a life-threatening, seriously debilitating or serious and chronic condition in the EU and
that without incentives it is unlikely that the marketing of the medicinal product in the EU would generate sufficient return to justify the necessary investment.
For either of these criteria, the applicant must demonstrate that there exists no satisfactory method of diagnosis, prevention or treatment of the condition in
question that has been authorized in the EU or, if such method exists, the medicinal product will be of significant benefit to those affected by that condition.
Orphan drug designation must be requested before

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submitting a marketing application.

Orphan drug designation does not shorten the regulatory review and approval process. However, if an orphan drug later receives approval for the

indication for which it has designation, the relevant regulatory authority may not approve any other applications to market the same drug for the same
indication, except in very limited circumstances, for seven years in the U.S. and ten years in the EU (extendable to twelve years for medicines that have
complied with an agreed pediatric investigation plan pursuant to Regulation 1901/2006) and, in addition, a range of other benefits during the development and
regulatory review process are available in the EU, including scientific assistance for study protocols, authorization through the centralized marketing
authorization procedure covering all member countries and a reduction or elimination of registration and marketing authorization fees. Among the benefits of
orphan drug designation in the U.S. are tax credits for certain research and a waiver of the NDA/BLA application user fee. Orphan drug exclusive marketing
rights may be lost under certain conditions, such as if the request for designation was materially defective or if the manufacturer is unable to assure sufficient
quantity of the drug. In the EU, marketing authorization may be granted to a similar medicinal product with the same orphan indication during the regulatory
exclusivity period with the consent of the marketing authorization holder for the original orphan medicinal product or if the manufacturer of the original orphan
medicinal product is unable to supply sufficient quantities. Marketing authorization may also be granted to a similar medicinal product with the same orphan
indication if this medicinal product is safer, more effective or otherwise clinically superior to the original orphan medicinal product. The period of market
exclusivity may, in addition, be reduced to six years if, at the end of the fifth year, it can be demonstrated on the basis of available evidence that the criteria for
its designation as an orphan medicine are no longer satisfied, for example if the original orphan medicinal product has become sufficiently profitable not to
justify maintenance of market exclusivity.

Breakthrough Therapy Designation

The FDA is also required to expedite the development and review of the application for approval of drugs that are intended to treat a serious or life-

threatening disease or condition where preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over existing therapies
on one or more clinically significant endpoints. Under the breakthrough therapy program, the sponsor of a new drug candidate may request that the FDA
designate the drug candidate for a specific indication as a breakthrough therapy concurrent with, or after, the filing of the IND for the drug candidate. The FDA
must determine if the drug candidate qualifies for breakthrough therapy designation within 60 days of receipt of the sponsor’s request.

PRIME Designation

The EMA launched its PRIME regulatory initiative to enhance support for the development of therapies that target an unmet medical need. The
initiative focuses on drugs that may offer a major therapeutic advantage over existing treatments, or benefit patients with no treatment options. These therapies
are considered priority medicines within the EU. Through PRIME, the EMA offers early, proactive and enhanced support to drug developers to optimize the
generation of robust data on a therapy’s benefits and risks and enable accelerated assessment of drug applications.

Pediatric Information

Under the Pediatric Research Equity Act of 2007 (PREA), NDAs or BLAs or supplements to NDAs or BLAs must contain data to assess the safety and

effectiveness of the drug for the claimed indication(s) in all relevant pediatric subpopulations and to support dosing and administration for each pediatric
subpopulation for which the drug is safe and effective. The FDA may grant deferrals for submission of data or full or partial waivers. Unless otherwise required
by statute or regulation, PREA does not apply to any drug for an indication for which orphan drug designation has been granted. The Best Pharmaceuticals for
Children Act (BPCA) provides sponsors of NDAs with an additional six-month period of market exclusivity for all unexpired patent or non-patent exclusivity on
all forms of the drug containing the active moiety if the sponsor submits results of pediatric studies specifically requested by the FDA under BPCA within
required timeframes. The BPCIA provides sponsors of BLAs an additional six-month extension for all unexpired non-patent market exclusivity on all forms of
the biological containing the active moiety pursuant to the BPCA if the conditions under the BPCA are met.

In the EU, companies developing a new medicinal product must agree to a Paediatric Investigation Plan (PIP) with the EMA and must conduct

pediatric clinical trials in accordance with that PIP, unless a deferral or waiver applies, (e.g., because the relevant disease or condition occurs only in adults).
The MAA for the product must include the results of pediatric clinical trials conducted in accordance with the PIP, unless a waiver applies, or a deferral has
been granted, in which case the pediatric clinical trials must be completed at a later date. Products that are granted a marketing authorization on the basis of
the pediatric clinical trials conducted in accordance with the PIP are eligible for a six month extension of the protection under a supplementary protection
certificate (if any is in effect at the time of approval) or, in the case of orphan medicinal products, a two year extension of the orphan market exclusivity. This
pediatric reward is subject to specific conditions and is not automatically available when data in compliance with the PIP are developed and submitted.

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Fast Track Designation and Accelerated Approval

The FDA is required to facilitate the development and expedite the review of drugs that are intended for the treatment of a serious or life-threatening
condition for which there is no effective treatment and that demonstrate the potential to address unmet medical needs for the condition. Under the FDA’s fast
track program, the sponsor of a new drug candidate may request that the FDA designate the drug candidate for a specific indication as a fast track drug
concurrent with or after the filing of the IND for the drug candidate. The FDA must determine if the drug candidate qualifies for fast track designation within 60
days of receipt of the sponsor’s request.

In addition to other benefits, such as the ability to use surrogate endpoints and have greater interactions with the FDA, the FDA may initiate review of
sections of a fast track drug’s NDA or BLA before the application is complete. This rolling review is available if the applicant provides and the FDA approves a
schedule for the submission of the remaining information and the applicant pays applicable user fees. However, the FDA’s time period goal for reviewing an
application does not begin until the last section of the NDA or BLA is submitted. Additionally, the fast track designation may be withdrawn by the FDA if the FDA
believes that the designation is no longer supported by data emerging in the clinical trial process.

Under the fast track program and the FDA’s accelerated approval regulations, the FDA may approve a drug for a serious or life-threatening illness that
provides meaningful therapeutic benefit to patients over existing treatments based upon a surrogate endpoint that is reasonably likely to predict clinical benefit,
or on a clinical endpoint that can be measured earlier than irreversible morbidity or mortality, that is reasonably likely to predict an effect on irreversible
morbidity or mortality or other clinical benefit, taking into account the severity, rarity, or prevalence of the condition and the availability or lack of alternative
treatments. In clinical trials, a surrogate endpoint is a measurement of laboratory or clinical signs of a disease or condition that substitutes for a direct
measurement of how a patient feels, functions, or survives. Surrogate endpoints can often be measured more easily or more rapidly than clinical endpoints. A
drug candidate approved on this basis is subject to rigorous post-marketing compliance requirements, including the completion of a Phase 4 or post-approval
clinical trial to confirm the effect on the clinical endpoint. Failure to conduct a required post-approval study or confirm a clinical benefit through a post-marketing
study will allow the FDA to withdraw the drug from the market on an expedited basis. All promotional materials for drug candidates approved under accelerated
regulations are subject to prior review by the FDA.

Post-Approval Regulatory Requirements

Following approval, the FDA and the EMA will impose certain post-approval requirements related to a product. For instance, the FDA closely

regulates the post-approval marketing and promotion of approved products, including standards and regulations for direct-to-consumer advertising, off-label
promotion, industry-sponsored scientific and educational activities and promotional activities involving the Internet. Moreover, if a company obtains original FDA
approval for a product via the accelerated approval pathway, the company may be required to conduct a post-marketing confirmatory trial to verify and describe
the clinical benefit in support of full approval. An unsuccessful post-marketing study or failure to complete such a study could result in the withdrawal of the
FDA’s marketing approval for a product.

Approved products may be marketed only for the approved indications and in accordance with the provisions of the approved labeling. Changes to

some of the conditions established in an approved application, including changes in indications, labeling, or manufacturing processes or facilities, may require
a submission to and approval by the FDA or the EMA, as applicable, before the change can be implemented. An NDA/BLA or MAA supplement for a new
indication typically requires clinical data similar to that in the original application, and similar procedures and actions in reviewing NDA/ BLA or MAA
supplements as in reviewing NDAs/BLAs and MAAs.

Adverse event reporting and submission of periodic reports is required following marketing approval. Either the FDA or EMA may also require post-
marketing testing, known as Phase 4 testing, a risk evaluation and mitigation strategy, and surveillance to monitor the effects of an approved product or place
conditions on an approval that could restrict the distribution or use of the product. In addition, quality control as well as the manufacture, packaging, and
labeling procedures must continue to conform to cGMPs after approval. Drug and biological product manufacturers and certain of their subcontractors are
subject to periodic unannounced inspections by the FDA or the EMA during which the agency inspects manufacturing facilities to assess compliance with
cGMPs. Accordingly, manufacturers must continue to expend time, money and effort in the areas of production and quality control to maintain compliance with
cGMPs. Regulatory authorities may withdraw product approvals or request product recalls if a company fails to comply with regulatory standards, if it
encounters problems following initial marketing, or if previously unrecognized problems are subsequently discovered. In addition, prescription drug
manufacturers in the U.S. must comply with applicable provisions of the Drug Supply Chain Security Act and provide and receive product tracing information,
maintain appropriate licenses, ensure they only work with other properly licensed entities and have procedures in place to identify and properly handle suspect
and illegitimate products.

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Healthcare Reform

The U.S. and some foreign jurisdictions are considering or have enacted a number of legislative and regulatory proposals to change the healthcare

system in ways that could affect our ability to sell our products profitably. For example, in the U.S., the PPACA is a sweeping measure intended to improve
quality of care, constrain healthcare spending, and expand healthcare coverage within the U.S., primarily through the imposition of health insurance mandates
on employers and individuals and expansion of the Medicaid program.

The PPACA also imposed a fee on certain manufacturers and importers of branded prescription drugs (excluding orphan drugs under certain
conditions). The annual fee is apportioned among the participating companies based on each company’s sales of qualifying products to, or use by, certain U.S.
government programs during the preceding year. Other provisions of the law have also affected us and have increased certain of our costs. For example, the
Medicaid rebate rate was increased and the volume of rebated drugs has been expanded to include beneficiaries in Medicaid managed care organizations.
Among other things, the PPACA also expanded the 340B drug discount program (excluding orphan drugs), including the creation of new penalties for non-
compliance, and now includes a 70% discount on brand name drugs for Medicare Part D participants in the coverage gap, or “donut hole.” The law also revised
the definition of “average manufacturer price” for reporting purposes. In addition, drug manufacturers are required to collect and report annually information on
payments or transfers of value to physicians and teaching hospitals, as well as investment interests held by physicians and their immediate family members
during the preceding calendar year. Effective January 1, 2022, drug manufacturers will also be required to report on payments or transfers of value to physician
assistants, nurse practitioners or clinical nurse specialists, certified registered nurse anesthetists, and certified nurse-midwives. The reported data are posted in
searchable form on a public web site. Failure to submit required information may result in civil monetary penalties. It is still unclear the full impact that the
PPACA will have on our business. There have been judicial and congressional challenges to certain aspects of the PPACA, and we expect that there will be
additional challenges and amendments in the future, especially with the current Presidential administration.

Since January 2017, the U.S. President has signed two Executive Orders designed to delay the implementation of any certain provisions of the

PPACA or otherwise circumvent some of the requirements for health insurance mandated by the PPACA. Concurrently, Congress has considered legislation
that would repeal or repeal and replace all or part of the PPACA. While Congress has not passed legislation repealing the PPACA in its entirety, it has enacted
laws that modify certain provisions of the PPACA such as removing penalties for not complying with the PPACA’s individual mandate to carry health insurance,
delaying the implementation of certain ACA-mandated fees, and increasing the point-of-sale discount that is owed by pharmaceutical manufacturers who
participate in Medicare Part D. Additionally, on December 14, 2018, a Texas U.S. District Court Judge ruled that the PPACA is unconstitutional in its entirety
because the individual mandate was repealed by Congress as part of the Tax Cuts and Jobs Act. While the Texas U.S. District Court Judge, as well as the U.S.
Presidential administration and the Centers for Medicare and Medicaid Services (CMS), have stated that the ruling will have no immediate effect pending
appeal of the decision, it is unclear how this decision, subsequent appeals, and other efforts to repeal and replace the PPACA will impact the PPACA.

Other legislative changes have been proposed and adopted since the PPACA was enacted. These changes included the Budget Control Act of 2011,

which caused aggregate reductions to Medicare payments to providers of up to 2% per fiscal year effective April 1, 2013 which, following passage of the
Bipartisan Budget Act of 2015, will stay in effect through 2029 unless additional congressional action is taken. Further, the American Taxpayer Relief Act of
2012, among other things, further reduced Medicare payments to several types of providers.

Additionally, there has been increasing legislative and enforcement interest in the U.S. with respect to specialty drug pricing practices. Specifically,
there have been several recent U.S. congressional inquiries and proposed and enacted state and federal legislation designed to, among other things, bring
more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, and reform government program
reimbursement methodologies for drugs. For example, at the federal level, the U.S. Presidential administration’s budget proposal for the fiscal year 2021
includes a $135.0 billion allowance to support legislative proposals seeking to reduce drug prices, increase competition, lower out-of-pocket drug costs for
patients, and increase patient access to lower-cost generic and biosimilar drugs. Moreover, the U.S. Presidential administration previously released a
“Blueprint” to lower drug prices and reduce out of pocket costs of drugs that contained proposals to increase manufacturer competition, increase the
negotiating power of certain federal healthcare programs, incentivize manufacturers to lower the list price of their products and reduce the out of pocket costs
of drug products paid by consumers. Although a number of these and other measures may require additional authorization to become effective, Congress and
the U.S. Presidential administration have each indicated that it will continue to seek new legislative and/or administrative measures to control drug costs. At the
state level, legislatures have increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing,
including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency
measures, and, in some cases, to encourage importation from other countries and bulk purchasing.

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Brexit and the Regulatory Framework in the U.K.

In June 2016, a majority of the eligible members of the electorate in the U.K. voted to withdraw from the EU in a national referendum (Brexit). On

March 29, 2017, the U.K.’s Prime Minister formally delivered the notice of withdrawal. After significant negotiation between the U.K. and the EU, the withdrawal
of the U.K. from the EU took effect on January 31, 2020. There is now a transition period while the U.K. and EU negotiate additional arrangements, including
their future trading terms. The U.K. has stated that it wants the transition period to expire, and the future trading terms to be agreed, by December 31, 2020.

Since the regulatory framework for pharmaceutical products in the U.K covering quality, safety and efficacy of pharmaceutical products, clinical trials,

marketing authorization, commercial sales and distribution of pharmaceutical products is derived from EU directives and regulations, immediately following
Brexit, it is expected that the U.K.'s regulatory regime will remain aligned with EU regulations. It remains to be seen how, if at all, Brexit will impact regulatory
requirements for product candidates and products in the U.K. In the longer term, Brexit could materially impact the future regulatory regime which applies to
products and the approval of product candidates in the U.K.

Other U.S. Regulatory Requirements

In addition to FDA restrictions on marketing of pharmaceutical products, several other types of state and federal laws have been applied to restrict
certain business and marketing practices in the pharmaceutical industry in recent years. These laws include anti-kickback, false claims, patient data privacy
and security, and transparency statutes and regulations.

The federal Anti-Kickback Statute prohibits, among other things, knowingly and willfully offering, paying, soliciting or receiving remuneration to induce

or in return for purchasing, leasing, ordering or arranging for the purchase, lease or order of any healthcare item or service reimbursable under Medicare,
Medicaid or other federally financed healthcare programs. The PPACA amended the intent requirement of the federal Anti-Kickback and certain other criminal
healthcare fraud statutes such that a person or entity no longer needs to have actual knowledge of these statutes or specific intent to violate them in order to
commit a violation. This statute has been interpreted to apply to arrangements between pharmaceutical manufacturers on the one hand and prescribers,
purchasers and formulary managers on the other. Although there are a number of statutory exceptions and regulatory safe harbors protecting certain common
activities from prosecution or other regulatory sanctions, the exceptions and safe harbors are drawn narrowly, and practices that involve remuneration intended
to induce prescribing, purchases or recommendations may be subject to scrutiny if they do not qualify for an exception or safe harbor.

Federal false claims laws prohibit any person from knowingly presenting, or causing to be presented, a false claim for payment to the federal

government, or knowingly making, or causing to be made, a false statement to have a false claim paid. The PPACA amended the statute so that the
government may assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent
claim for purposes of the false claims laws. Recently, several pharmaceutical and other healthcare companies have been prosecuted under these laws for
allegedly inflating drug prices they report to pricing services, which in turn are used by the government to set Medicare and Medicaid reimbursement rates, and
for allegedly providing free product to customers with the expectation that the customers would bill federal programs for the product. In addition, certain
marketing practices, including off-label promotion, may also violate false claims laws.

The federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, imposes criminal and civil liability for, among other things,

executing a scheme to defraud any healthcare benefit program or making false statements relating to healthcare matters.

HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act and their implementing regulations, also imposes

obligations, including mandatory contractual terms, on certain types of individuals and entities, with respect to safeguarding the privacy, security and
transmission of individually identifiable health information.

The federal Physician Payments Sunshine Act requires certain manufacturers of drugs, devices, biologics and medical supplies for which payment is
available under Medicare, Medicaid or the Children’s Health Insurance Program, with specific exceptions, to report annually to the CMS information related to
payments or other transfers of value made to physicians and teaching hospitals, and applicable manufacturers and applicable group purchasing organizations
to report annually to CMS ownership and investment interests held by the physicians and their immediate family members.

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The majority of states also have statutes or regulations similar to the federal Anti-Kickback Statute and false claims laws, which apply to items and
services reimbursed under Medicaid and other state programs, or, in several states, apply regardless of the payer. Sanctions under these federal and state
laws may include civil monetary penalties, damages, monetary fines, disgorgement, exclusion of a company from federal healthcare programs, integrity
oversight and reporting obligations, criminal fines, contractual damages, reputational harm, diminished profits and future earnings, curtailment of operations
and imprisonment. Several states now require pharmaceutical companies to report expenses relating to the marketing and promotion of pharmaceutical
products and to report gifts and payments to individual physicians in these states while other states prohibit various other marketing-related activities. Other
states require submission or disclosure of certain pricing information. Still other states require the posting of information relating to clinical studies and their
outcomes. In addition, states including California, Connecticut, Nevada and Massachusetts require pharmaceutical companies to implement compliance
programs or marketing codes. Currently, several additional states are considering similar proposals. Compliance with these laws is difficult and time
consuming, and companies that do not comply with these state laws face civil penalties.

Approval Outside of the U.S./EU

For marketing outside the U.S. and the EU, we are subject to foreign regulatory requirements governing human clinical testing and marketing approval

for our products. These requirements vary by jurisdiction, can differ from those in the U.S. and the EU and may require us to perform additional preclinical or
clinical testing. The amount of time required to obtain necessary approvals may be longer or shorter than that required for FDA or EMA approval. In many
countries outside of the U.S., approvals for pricing, coverage and reimbursement offered by third-party payers, including government payers and private
insurance plans, are also required.

Anti-Corruption Legislation

The U.S. Foreign Corrupt Practices Act (FCPA), to which we are subject, prohibits corporations and individuals from engaging in certain activities to

obtain or retain business or to influence a person working in an official capacity. It is illegal to pay, offer to pay or authorize the payment of anything of value to
any foreign government official, government staff member, political party or political candidate in an attempt to obtain or retain business or to otherwise
influence a person working in an official capacity. Similar laws exist in other countries, such as the U.K., that restrict improper payments to public and private
parties. Many countries have laws prohibiting these types of payments within the respective country. Historically, pharmaceutical companies have been the
target of FCPA and other anti-corruption investigations and penalties.

Pricing and Reimbursement

Because the course of treatment for patients using our products is expensive, sales of our products depend, in significant part, on the availability and

extent of coverage and reimbursement offered by third-party payers, including government payers and private insurance plans. Governments may regulate
access to, prices of or reimbursement levels for our products to control costs or to affect levels of use of our products, and private insurers may be influenced
by government reimbursement methodologies.

Third-party payers carefully review and increasingly challenge the prices charged for drugs, examine their medical necessity, and review their cost

effectiveness. Reimbursement rates from private companies vary depending on the third-party payer, the insurance plan and other factors. One payer’s
determination to provide coverage for a product does not assure that other payers will also provide coverage for the product. Moreover, the process for
determining whether a third-party payer will provide coverage for a product may be separate from the process for setting the price of a product or for
establishing the reimbursement rate that such a payer will pay for the product. Obtaining coverage and adequate reimbursement for our products may be
particularly difficult because of the higher prices often associated with drugs administered under the supervision of a physician. A payer’s decision to provide
coverage for a product does not imply that an adequate reimbursement rate will be approved. Adequate third-party reimbursement may not be available to
enable us to maintain high enough price levels to realize sufficient revenues from our investment in product development. In addition, emphasis on managed
care in the U.S. has increased and we expect will continue to increase the pressure on pharmaceutical pricing. Coverage policies and third-party
reimbursement rates may change at any time. Even if favorable coverage and reimbursement status is attained for one or more products for which we or our
collaborators receive regulatory approval, less favorable coverage policies and reimbursement rates may be implemented in the future.

Outside of the U.S. our products are paid for by a variety of payers, with governments being the primary source of payment. Reimbursement in the EU

and many other territories must be negotiated on a country-by-country basis and in many countries the product cannot be commercially launched until
reimbursement is approved. In many countries the government closely regulates drug pricing and reimbursement and often has a significant discretion in
determining whether a product will be reimbursed at all and, if it is, how much will be paid. Negotiating prices with governmental authorities can delay patient
access to and commercialization of our products. Payers in many countries use a variety of cost-containment measures that can include referencing prices in
other countries and using those reference prices to set their own price, mandatory price cuts and rebates. This international patchwork of price regulation has
led to different prices across countries and some cross-border trade in our products from markets with lower prices. Even after a price is negotiated, countries
frequently request or require adjustments to the price and other concessions over time.

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Government Programs for Marketed Drugs in the U.S.

Medicaid, the 340B Drug Pricing Program, and Medicare

Federal law requires that a pharmaceutical manufacturer, as a condition of having its products receive federal reimbursement under Medicaid and

Medicare Part B, must pay rebates to state Medicaid programs for all units of its covered outpatient drugs dispensed to Medicaid beneficiaries and paid for by a
state Medicaid program under either a fee-for-service arrangement or through a managed care organization. This federal requirement is effectuated through a
Medicaid drug rebate agreement between the manufacturer and the Secretary of Health and Human Services. CMS administers the Medicaid drug rebate
agreements, which provide, among other things, that the drug manufacturer will pay rebates to each state Medicaid agency on a quarterly basis and report
certain price information on a monthly and quarterly basis. The rebates are based on prices reported to CMS by manufacturers for their covered outpatient
drugs. For non-innovator products, generally generic drugs marketed under ANDAs, the rebate amount is 13% of the average manufacturer price (AMP) for the
quarter. The AMP is the weighted average of prices paid to the manufacturer (1) directly by retail community pharmacies and (2) by wholesalers for drugs
distributed to retail community pharmacies. For innovator products (i.e., drugs that are marketed under NDAs or BLAs), the rebate amount is the greater of
23.1% of the AMP for the quarter or the difference between such AMP and the best price for that same quarter. The best price is essentially the lowest price
available to non-governmental entities. Innovator products may also be subject to an additional rebate that is based on the amount, if any, by which the
product’s AMP for a given quarter exceeds the inflation-adjusted baseline AMP, which for most drugs is the AMP for the first full quarter after launch. Since
2017, non-innovator products are also subject to an additional rebate.

The terms of participation in the Medicaid drug rebate program impose an obligation to correct the prices reported in previous quarters, as may be

necessary. Any such corrections could result in additional or lesser rebate liability, depending on the direction of the correction. In addition to retroactive
rebates, if a manufacturer were found to have knowingly submitted false information to the government, federal law provides for civil monetary penalties for
failing to provide required information, late submission of required information, and false information.

A manufacturer must also participate in a federal program known as the 340B drug pricing program in order for federal funds to be available to pay for

the manufacturer’s drugs under Medicaid and Medicare Part B. Under this program, the participating manufacturer agrees to charge certain safety net
healthcare providers no more than an established discounted price for its covered outpatient drugs. The formula for determining the discounted price is defined
by statute and is based on the AMP and the unit rebate amount as calculated under the Medicaid drug rebate program, discussed above. Manufacturers are
required to report pricing information to the Health Resources and Services Administration (HRSA) on a quarterly basis. HRSA has also issued regulations
relating to the calculation of the ceiling price as well as imposition of civil monetary penalties for each instance of knowingly and intentionally overcharging a
340B covered entity.

Federal law also requires that manufacturers report data on a quarterly basis to CMS regarding the pricing of drugs that are separately reimbursable

under Medicare Part B. These are generally drugs, such as injectable products, that are administered “incident to” a physician service and are not generally
self-administered. The pricing information submitted by manufacturers is the basis for reimbursement to physicians and suppliers for drugs covered under
Medicare Part B. As with the Medicaid drug rebate program, federal law provides for civil monetary penalties for failing to provide required information, late
submission of required information, and false information.

Medicare Part D provides prescription drug benefits for seniors and people with disabilities. Medicare Part D beneficiaries have a gap in their
coverage (between the initial coverage limit and the point at which catastrophic coverage begins) where Medicare does not cover their prescription drug costs,
known as the coverage gap. However, by 2020 Medicare Part D beneficiaries will pay 25% of drug costs after they reach the initial coverage limit - the same
percentage they were responsible for before they reached that limit - thereby closing the coverage gap. The cost of closing the coverage gap is being borne by
innovator companies and the government through subsidies. Each manufacturer of drugs approved under NDAs or BLAs is required to enter into a Medicare
Part D coverage gap discount agreement and provide a 70% discount on those drugs dispensed to Medicare beneficiaries in the coverage gap, in order for its
drugs to be reimbursed by Medicare Part D.

Federal Contracting/Pricing Requirements

Manufacturers are also required to make their covered drugs, which are generally drugs approved under NDAs or BLAs, available to authorized users

of the Federal Supply Schedule (FSS) of the General Services Administration. The law also requires manufacturers to offer deeply discounted FSS contract
pricing for purchases of their covered drugs by the Department of Veterans Affairs, the Department of Defense, the Coast Guard, and the Public Health Service
(including the Indian Health Service) in order for federal funding to be available for reimbursement or purchase of the manufacturer’s drugs under certain
federal programs. FSS pricing to those four federal agencies for covered drugs must be no more than the Federal Ceiling Price (FCP), which is at least 24%
below the Non-Federal Average Manufacturer Price (Non-FAMP) for the prior year. The Non-FAMP is the average price for

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covered drugs sold to wholesalers or other middlemen, net of any price reductions.

The accuracy of a manufacturer’s reported Non-FAMPs, FCPs, or FSS contract prices may be audited by the government. Among the remedies

available to the government for inaccuracies is recoupment of any overcharges to the four specified federal agencies based on those inaccuracies. If a
manufacturer were found to have knowingly reported false prices, in addition to other penalties available to the government, the law provides for significant civil
monetary penalties per incorrect item. Finally, manufacturers are required to disclose in FSS contract proposals all commercial pricing that is equal to or less
than the proposed FSS pricing, and subsequent to award of an FSS contract, manufacturers are required to monitor certain commercial price reductions and
extend commensurate price reductions to the government, under the terms of the FSS contract Price Reductions Clause. Among the remedies available to the
government for any failure to properly disclose commercial pricing and/or to extend FSS contract price reductions is recoupment of any FSS overcharges that
may result from such omissions.

Employees

As of February 13, 2020, we had 3,001 full-time employees, 1,358 of whom were in operations, 653 of whom were in research and development, 508

of whom were in sales and marketing and 482 of whom were in administration.

Other Information

We were incorporated in Delaware in October 1996. Our principal executive offices are located at 770 Lindaro Street, San Rafael, California 94901

and our telephone number is (415) 506-6700. Our annual reports on Form 10-K, quarterly reports on Form 10-Q, proxy statements, current reports on Form 8-
K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the Exchange
Act) are available free of charge at www.bmrn.com as soon as reasonably practicable after electronically filing such reports with the Security and Exchange
Commission (the SEC). Such reports and other information may be accessed through the SEC’s website at www.sec.gov. Information contained in our website
is not part of this or any other report that we file with or furnish to the SEC.

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Item 1A. Risk Factors

An investment in our securities involves a high degree of risk. We operate in a dynamic and rapidly changing industry that involves numerous risks

and uncertainties. The risks and uncertainties described below are not the only ones we face. Other risks and uncertainties, including those that we do not
currently consider material, may impair our business. If any of the risks discussed below actually occur, our business, financial condition, operating results or
cash flows could be materially adversely affected. This could cause the value of our securities to decline, and you may lose all or part of your investment.

Risks Related to Our Business

If we fail to obtain and maintain regulatory approval to commercially market and sell our product candidates, or if approval of our product
candidates is delayed, we will be unable to generate revenue from the sale of these product candidates, our potential for generating positive cash
flow will be diminished, and the capital necessary to fund our operations will increase.

We must obtain and maintain regulatory approval to market and sell our product candidates. For example, in the United States (U.S.), we must obtain

Food and Drug Administration (FDA) approval for each product candidate that we intend to commercialize, and in Europe we must obtain approval from the
European Medicines Agency (EMA). The FDA and EMA approval processes are typically lengthy and expensive, and approval is never certain. Accordingly,
there are no assurances that we will obtain regulatory approval for any of our product candidates. Furthermore, there can be no assurance that approval of one
of our product candidates by one regulatory agency will mean that other agencies will also approve the same product candidate. Similarly, regulatory
authorities may approve a product candidate for fewer or more limited indications than requested or may grant approval subject to the performance of post-
marketing studies. In addition, regulatory authorities may not approve the labeling claims that are necessary or desirable for the successful commercialization
of our product candidates.

We have had fewer interactions with regulatory authorities outside the U.S. and the European Union (EU) as compared to our interactions with the

FDA and EMA. The approval procedures vary among countries and can involve additional clinical testing, and the time required to obtain approval may differ
from that required to obtain FDA or EMA approval. Moreover, clinical trials conducted in one country may not be accepted by regulatory authorities in other
countries. Approval by the FDA or EMA does not ensure approval by regulatory authorities in other countries, and approval by one or more foreign regulatory
authorities does not ensure approval by regulatory authorities in other foreign countries or by the FDA or EMA. However, a failure or delay in obtaining
regulatory approval in one country may have a negative effect on the regulatory process in others. The foreign regulatory approval process may include all of
the risks associated with obtaining FDA or EMA approval. We may not obtain foreign regulatory approvals on a timely basis, if at all. We may not be able to file
for regulatory approvals and even if we file we may not receive necessary approvals to commercialize our product candidates in any market.

Because of the risks and uncertainties in pharmaceutical development, our product candidates could take a significantly longer time to gain regulatory

approval than we expect or may never gain approval. We also rely on independent third-party contract research organizations (CROs) to file some of our
foreign marketing applications and important aspects of the services performed for us by the CROs are out of our direct control. If we fail to adequately manage
our CROs, if the CRO elects to prioritize work on our projects below other projects or if there is any dispute or disruption in our relationship with our CROs, the
filing of our applications may be delayed.

Although the FDA and the EMA have programs to facilitate expedited development and accelerated approval processes, the timelines agreed under

legislative goals or mandated by regulations are subject to the possibility of substantial delays. In addition, the FDA, the EMA and other international regulatory
authorities have substantial discretion over the approval process for pharmaceutical products. These regulatory agencies may not agree that we have
demonstrated the requisite level of product safety and efficacy to grant approval and may require additional data. Moreover, if original FDA approval for one of
our product candidates is granted via the accelerated approval pathway, we may be required to conduct a post-marketing confirmatory trial to verify and
describe the clinical benefit in support of full approval. An unsuccessful post-marketing study or failure to complete such a study with due diligence could result
in the withdrawal of the FDA’s marketing approval for a product candidate. If we fail to obtain and maintain regulatory approval for our product candidates, we
will be unable to market and sell those product candidates, which would have a negative effect on our business and financial condition.

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With respect to valoctocogene roxaparvovec, we may experience challenges specific to gene therapy that cause significant delays or unanticipated
costs, or that cannot be solved. Although numerous companies are currently advancing gene therapy product candidates through clinical trials, the FDA has
only approved a very small number of vector-based gene therapy products thus far. Moreover, there are very few approved gene therapy products outside the
U.S. As a result, it is difficult to determine how long it will take or how much it will cost to obtain regulatory approvals for valoctocogene roxaparvovec in any
jurisdiction. Regulatory requirements governing gene and cell therapy products are still evolving and may continue to change in the future. Regulatory review
agencies and the new requirements and guidelines they promulgate may lengthen the regulatory review process, require us to perform additional or larger
studies, increase our development costs, lead to changes in regulatory positions and interpretations, delay or prevent approval and commercialization of our
treatment candidate or lead to significant post-approval studies, limitations or restrictions. Delay or failure to obtain, or unexpected costs in obtaining, the
regulatory approval necessary to bring valoctocogene roxaparvovec to market could have a negative effect on our business and financial condition. Even if we
do obtain regulatory approval, ethical, social and legal concerns about gene therapy arising in the future could result in additional regulations restricting or
prohibiting sale of our product.

In addition, some of our product candidates are intended to be used in combination with a delivery device, such as an injector or other delivery

system. Medical products containing a combination of new drugs, biological products or medical devices may be regulated as “combination products” in the
U.S. A combination product generally is defined as a product consisting of components from two or more regulatory categories (e.g., drug/device,
device/biologic, drug/biologic). Each component of a combination product is subject to the requirements established by the FDA for that type of component,
whether a new drug, biologic or device. In order to facilitate pre-market review of combination products, the FDA designates one of its centers to have primary
jurisdiction for the pre-market review and regulation of the overall product based upon a determination by the FDA of the primary mode of action of the
combination product. The determination whether a product is a combination product or two separately regulated products is made by the FDA on a case-by-
case basis. Our product candidates intended for use with such devices, or expanded indications that we may seek for our products used with such devices,
may not be approved or may be substantially delayed in receiving approval if the devices do not gain and/or maintain their own regulatory approvals or
clearances. Where approval of the drug or biologic product and device is sought under a single application, the increased complexity of the review process
may delay approval. The FDA review process and criteria are not well-established areas, which could also lead to delays in the approval process. In addition,
because these delivery devices are provided by unaffiliated third-party companies, we are dependent on the sustained cooperation and effort of those third-
party companies both to obtain regulatory approval and to maintain their own regulatory compliance. Failure of third-party companies to assist in the approval
process or to maintain their own regulatory compliance could delay or prevent approval of our product candidates, or limit our ability to sell a product once it is
approved.

From time to time during the development and regulatory approval process for our products and product candidates, we engage in discussions with

the FDA and comparable international regulatory authorities regarding our development programs, including discussions about the regulatory requirements for
approval. As part of these discussions, we sometimes seek advice in the design of our clinical programs from various regulatory agencies globally, but we do
not always follow such guidance. This increases the chance of adverse regulatory actions, but we try to always provide appropriate scientific evidence to
support approval. For example, although we designed our Phase 3 study of vosoritide in a manner that we believe can demonstrate efficacy and safety of the
product candidate for the target patient population, the FDA may ultimately disagree. Moreover, sometimes different regulatory agencies provide different or
conflicting advice. While we attempt to harmonize the advice we receive from multiple regulatory authorities, it is not always practical to do so. Also, we may
choose not to harmonize conflicting advice when harmonization would significantly delay clinical trial data or is otherwise inappropriate. If we are unable to
effectively and efficiently resolve and comply with the inquiries and requests of the FDA and other non-U.S. regulatory authorities, the approval of our product
candidates may be delayed and their value may be reduced.

Any product for which we have obtained regulatory approval, or for which we obtain approval in the future, is subject to, or will be subject

to, extensive ongoing regulatory requirements by the FDA, the EMA and other comparable international regulatory authorities, and if we fail to
comply with regulatory requirements or if we experience unanticipated problems with our products, we may be subject to penalties, we will be
unable to generate revenue from the sale of such products, our potential for generating positive cash flow will be diminished, and the capital
necessary to fund our operations will be increased.

Aldurazyme, Brineura, Kuvan, Naglazyme and Vimizim have received regulatory approval to be commercially marketed and sold in the U.S., the EU

and certain other countries, and Palynziq has received regulatory approval to be commercially marketed in the U.S. and the EU. Any product for which we have
obtained regulatory approval, or for which we obtain regulatory approval in the future, along with the manufacturing processes and practices, post-approval
clinical research, product labeling, advertising and promotional activities for such product, are subject to continual requirements of, and review by, the FDA, the
EMA and other comparable international regulatory authorities. These requirements include submissions of safety and other post-marketing information and
reports, registration and listing requirements, current good manufacturing practices (cGMP) requirements relating to manufacturing, quality control, quality
assurance and corresponding maintenance of records and documents, import and export requirements and record keeping.

An example of the ongoing regulatory requirements our products are subject to is the Palynziq Risk Evaluation and Mitigation Strategy (REMS)

program. In the U.S., Palynziq is only available through the REMS program, which is required by the FDA to mitigate the risk of anaphylaxis while using the
product. Notable requirements of our REMS program include the following:

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prescribers must be certified by enrolling in the REMS program and completing training;

prescribers must prescribe auto-injectable epinephrine with Palynziq;

pharmacies must be certified with the REMS program and must dispense Palynziq only to patients who are authorized to receive it;

patients must enroll in the REMS program and be educated about the risk of anaphylaxis by a certified prescriber to ensure they understand the risks
and benefits of treatment with Palynziq; and

patients must have auto-injectable epinephrine available at all times while taking Palynziq.

Failure of prescribers, pharmacies or patients to enroll in our REMS program or to successfully complete and comply with its requirements may result
in regulatory action from the FDA or decreased sales of Palynziq. The restrictions and requirements under our REMS program, as well as potential changes to
these restrictions and requirements in the future, subject us to increased risks and uncertainties, any of which could harm our business. The requirement for a
REMS program can materially affect the potential market for and profitability of a drug. We cannot predict whether the FDA will request, seek to require or
ultimately require modifications to, or impose additional requirements on, the Palynziq REMS program, or whether the FDA will permit modifications to the
Palynziq REMS program that we consider warranted. Any modifications required or rejected by the FDA could make it more difficult or expensive for us to
distribute Palynziq in the U.S., impair the safety profile of Palynziq, disrupt continuity of care for Palynziq patients and/or negatively affect sales of Palynziq.

Moreover, promotional communications with respect to prescription drugs, including biologics, are subject to a variety of legal and regulatory
restrictions and must be consistent with the information in the product's approved labeling. In particular, a product may not be promoted for uses that are not
approved by the FDA as reflected in the product’s approved labeling. The FDA and other agencies actively enforce the laws and regulations prohibiting the
promotion of off-label uses, and a company that is found to have improperly promoted off-label uses may be subject to significant civil, criminal and
administrative penalties. Thus, we will not be able to promote any products we develop for indications or uses for which they are not approved.

In addition, the FDA often requires post-marketing testing and surveillance to monitor the effects of products. The FDA, the EMA and other

comparable international regulatory agencies may condition approval of our product candidates on the completion of such post-marketing clinical studies.
These post-marketing studies may suggest that a product causes undesirable side effects or may present a risk to the patient.

Discovery after approval of previously unknown problems with any of our products, manufacturers or manufacturing processes, or failure to comply

with regulatory requirements, may result in actions such as:

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restrictions on our ability to conduct clinical trials, including full or partial clinical holds on ongoing or planned trials;

restrictions on product manufacturing processes;

restrictions on the marketing of a product;

restrictions on product distribution;

requirements to conduct post-marketing clinical trials;

untitled or warning letters or other adverse publicity;

withdrawal of the products from the market;

refusal to approve pending applications or supplements to approved applications that we submit;

recall of products;

refusal to permit the import or export of our products;

product seizure;

fines, restitution or disgorgement of profits or revenue;

injunctions; or

imposition of civil or criminal penalties.

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If such regulatory actions are taken, our value and our operating results will be adversely affected. Additionally, if the FDA, the EMA or any other
comparable international regulatory agency withdraws its approval of a product, we will be unable to generate revenue from the sale of that product in the
relevant jurisdiction, our potential for generating positive cash flow will be diminished and the capital necessary to fund our operations will be increased.
Accordingly, we continue to expend significant time, money and effort in all areas of regulatory compliance, including manufacturing, production, product
surveillance, post-marketing studies and quality control.

If we fail to obtain or maintain orphan drug exclusivity for some of our products, our competitors may obtain approval to sell the same

drugs to treat the same conditions and our revenues will be reduced.

As part of our business strategy, we have developed and may in the future develop some drugs that may be eligible for FDA and EU orphan drug

designation. Under the Orphan Drug Act, the FDA may designate a product as an orphan drug if it is intended to treat a rare disease or condition, defined as a
patient population of fewer than 200,000 in the U.S. In the EU, orphan drug designation is available if a sponsor can establish: that the medicine is intended for
the diagnosis, prevention or treatment of (1) a life-threatening or chronically debilitating condition affecting no more than five in 10,000 people in the EU, which
is equivalent to around 250,000 people or fewer or (2) a life-threatening, seriously debilitating or serious and chronic condition in the EU and that without
incentives it is unlikely that the marketing of the medicinal product in the EU would generate sufficient return to justify the necessary investment. For either of
these conditions, the applicant must demonstrate that there exists no satisfactory method of diagnosis, prevention or treatment of the condition in question that
has been authorized in the EU or, if such method exists, the medicinal product will be of significant benefit to those affected by that condition. The company
that first obtains FDA approval for a designated orphan drug for a given rare disease receives marketing exclusivity for use of that drug for the stated condition
for a period of seven years. Orphan drug exclusive marketing rights may be lost if the FDA later determines that the request for designation was materially
defective or if the manufacturer is unable to assure sufficient quantity of the drug. In addition, the FDA may approve another drug during a period of orphan
drug exclusivity if the second drug is found to be clinically superior to the first drug. In the EU, a ten-year period of market exclusivity (extendable to twelve
years for medicines that have complied with an agreed pediatric investigation plan pursuant to Regulation 1901/2006) is available. Orphan drug marketing
exclusivity may be lost in the EU if a manufacturer is unable to supply sufficient quantities and marketing authorization may also be granted to a similar
medicinal product with the same orphan indication if this medicinal product is safer, more effective or otherwise clinically superior to the original orphan
medicinal product. The period of market exclusivity may, in addition, be reduced to six years if, at the end of the fifth year, it can be demonstrated on the basis
of available evidence that the criteria for its designation as an orphan medicine are no longer satisfied, for example if the original orphan medicinal product has
become sufficiently profitable not to justify maintenance of market exclusivity. Because the extent and scope of patent protection for some of our products is
limited, orphan drug designation is especially important for our products that are eligible for orphan drug designation. For eligible products, we plan to rely on
the exclusivity period under the Orphan Drug Act to maintain a competitive position. If we do not obtain orphan drug exclusivity for our products that do not
have broad patent protection, our competitors may then sell the same drug to treat the same condition and our revenues will be reduced.

Even though we have obtained orphan drug designation for certain of our product candidates and even if we obtain orphan drug designation for our

future product candidates, due to the uncertainties associated with developing biopharmaceutical products, we may not be the first to obtain marketing
approval for any particular orphan indication, which means that we may not obtain orphan drug exclusivity and could also potentially be blocked from approval
of certain product candidates until the competitor product’s orphan drug exclusivity period expires. Moreover, with respect to certain biologics and gene
therapies, it is uncertain how similarity between product candidates designed to treat the same rare disease or condition may affect such product candidates’
orphan drug exclusivities. Further, even if we obtain orphan drug exclusivity for a product, that exclusivity may not effectively protect the product from
competition because different drugs can be approved for the same condition and the same drug can be approved for different conditions and potentially used
off-label in the orphan indication. Even after an orphan drug is approved and granted orphan drug exclusivity, the FDA can subsequently approve the same
drug for the same condition if the FDA concludes that the later drug is safer or more effective or makes a major contribution to patient care. Orphan drug
designation neither shortens the development time or regulatory review time of a drug, nor gives the drug any advantage in the regulatory review or approval
process.

We may face competition from biosimilars approved through an abbreviated regulatory pathway.

Our Aldurazyme, Brineura, Naglazyme, Palynziq and Vimizim products are regulated by the FDA as biologics under the Federal Food, Drug, and

Cosmetic Act (the FDC Act) and the Public Health Service Act (the PHS Act). Biologics require the submission of a Biologics License Application (BLA) and
approval by the FDA prior to being marketed in the U.S. The Biologics Price Competition and Innovation Act of 2009 (BPCIA) created a regulatory pathway
under the PHS Act for the abbreviated approval of biological products that are demonstrated to be “biosimilar” or “interchangeable” with an FDA-approved
biological product. A similar abridged marketing authorization process is available to biosimilar products in the EU. In order to meet the standard of
interchangeability, a sponsor must demonstrate that the biosimilar product can be expected to produce the same clinical result as the reference product, and
for a product that is administered more than once, that the risk of switching between the reference product and biosimilar product is not greater than the risk of
maintaining the patient on the reference product. The BPCIA establishes a period of 12 years of exclusivity for reference products. In Europe, a medicinal
product containing a new active substance benefits from eight years of data exclusivity, during which biosimilar applications referring to the data of that product
may not be accepted by the regulatory authorities, and a further two years of market exclusivity, during which such biosimilar products may not be placed on
the market. The two-year period may be extended to three years if during the first eight years a new therapeutic indication with significant clinical benefit over
existing therapies is approved. Our products approved under

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BLAs in the U.S. or Marketing Authorisation Applications (MAAs) in Europe, as well as products in development that may be approved under those regimes in
the future, could be reference products for biosimilar marketing applications.

To obtain regulatory approval to market our products, preclinical studies and costly and lengthy clinical trials are required and the results

of the studies and trials are highly uncertain. Likewise, preliminary, initial or interim data from clinical trials should be considered carefully and with
caution since the final data may be materially different from the preliminary, initial or interim data, particularly as more patient data become
available.

As part of the drug development process we must conduct, at our own expense, preclinical studies in the laboratory, including studies in animals, and
clinical trials on humans for each product candidate. The number of preclinical studies and clinical trials that regulatory authorities require varies depending on
the product candidate, the disease or condition the drug is being developed to address and regulations applicable to the particular drug. Generally, new drugs
for diseases or conditions that affect larger patient populations, are less severe, or are treatable by alternative strategies must be validated through additional
preclinical and clinical trials and/or clinical trials with higher enrollments. With respect to our early stage product candidates, we may need to perform multiple
preclinical studies using various doses and formulations before we can begin clinical trials, which could result in delays to our development timeline.
Furthermore, even if we obtain favorable results in preclinical studies, the results in humans may be significantly different. After we have conducted preclinical
studies, we must demonstrate that our product candidates are safe and efficacious for use in the targeted human patients in order to receive regulatory
approval for commercial sale. Clinical testing is expensive and can take many years to complete, and its outcome is inherently uncertain. Failure can occur at
any time during the clinical trial process. The results of preclinical studies and early clinical trials of our product candidates may not be predictive of the results
of later-stage clinical trials, and favorable data from interim analyses do not ensure the final results of a trial will be favorable. From time to time, we have and
may in the future publish or report preliminary, initial or interim data from our clinical trials, such as the data we have announced from the GENEr-8-1 study for
valoctocogene roxaparvovec. Preliminary, initial or interim data from our clinical trials may not be indicative of the final results of the trial and are subject to the
risk that one or more of the clinical outcomes may materially change as patient enrollment continues and/or more patient data become available. In this regard,
such data may show initial evidence of clinical benefit, but as patients continue to be followed and more patient data become available, there is a risk that any
therapeutic effects will not be durable in patients and/or will decrease over time or cease entirely. Preliminary, initial or interim data also remain subject to audit
and verification procedures that may result in the final data being materially different from such preliminary, initial or interim data. As a result, preliminary, initial
or interim data should be considered carefully and with caution until the final data are available.

Product candidates may fail to show the desired safety and efficacy traits despite having progressed through preclinical studies and initial clinical

trials, or despite having favorable data in connection with an interim analysis. A number of companies in the biopharmaceutical industry have suffered
significant setbacks in advanced clinical trials due to lack of efficacy or adverse safety profiles, notwithstanding promising results in earlier trials. Also, as noted
above, we do not always follow the advice of regulatory authorities or comply with all of their requests regarding the design of our clinical programs. In those
cases, we may choose a development program that is inconsistent with the advice of regulatory authorities, which may limit the jurisdictions where we conduct
clinical trials and/or adversely affect our ability to obtain approval in those jurisdictions where we do not follow the regulatory advice.

Adverse or inconclusive clinical results could stop us from obtaining regulatory approval of our product candidates. Additional factors that can cause

delay or termination of our clinical trials include:

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slow or insufficient patient enrollment;

slow recruitment of, and completion of necessary institutional approvals at, clinical sites;

budgetary constraints or prohibitively high clinical trial costs;

longer treatment time required to demonstrate efficacy;

lack of sufficient supplies of the product candidate;

adverse medical events or side effects in treated patients, including immune reactions;

lack of effectiveness of the product candidate being tested;

availability of competitive therapies to treat the same indication as our product candidates;

regulatory requests for additional clinical trials or preclinical studies;

deviations in standards for Good Clinical Practice (GCP); and

disputes with or disruptions in our relationships with clinical trial partners, including CROs, clinical laboratories, clinical sites, and principal
investigators.

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Moreover, principal investigators for our clinical trials may serve as scientific advisors or consultants to us from time to time and receive compensation

in connection with such services reportable to the FDA or other regulatory authority. If the FDA or other regulatory authority concludes that a financial
relationship between us and a principal investigator has created a conflict of interest, the FDA or other regulatory authority may question the integrity of the
data generated at the applicable clinical trial site and the utility of the clinical trial itself may be jeopardized.

Our valoctocogene roxaparvovec program is based on a gene therapy approach, which, as a novel technology, presents additional

development and treatment risks in relation to our other, more traditional drug development programs.

In addition to the risks set forth in this Risk Factors section associated with developing more traditional pharmaceutical drugs, there are additional,
unique development and treatment risks associated with gene therapy products like our product candidate valoctocogene roxaparvovec. The goal of gene
therapy is to be able to correct an inborn genetic defect through one-time administration of therapeutic genetic material containing non-defective gene copies.
The gene copies are designed to reside permanently in a patient, allowing the patient to produce an essential protein or ribonucleic acid (RNA) molecule that a
healthy person would normally produce. There is a risk, however, that the new gene copies will produce too little or too much of the desired protein or RNA.
Although a one-time administration of a gene therapy product like our product candidate valoctocogene roxaparvovec is intended to correct an inborn genetic
defect for the entire lifetime of a patient, there is a risk that the therapeutic effect will not be durable and production of the desired protein or RNA will decrease
over time or cease entirely. Because the treatment is irreversible, there may be challenges in managing side effects, particularly those caused by potential
overproduction of the desired protein. Adverse effects would not be able to be reversed or relieved by stopping dosing, and we may have to develop additional
clinical safety procedures. Furthermore, because the new gene copies are designed to reside permanently in a patient, there is a risk that they will disrupt other
normal biological molecules and processes, including other healthy genes, and we may not learn the nature and magnitude of these side effects until long after
clinical trials have been completed.

As compared to our other, more traditional products, our gene therapy product candidate valoctocogene roxaparvovec, if approved, may

present additional problems with respect to the pricing, coverage, and reimbursement and acceptance of the product candidate.

In addition to the risks set forth in this Risk Factors section associated with commercializing more traditional pharmaceutical drugs, there are
additional, unique commercial risks associated with gene therapy products like our product candidate valoctocogene roxaparvovec. Due to the relative novelty
of gene therapy and the potential to provide extended duration therapeutic treatment with a one-time administration, we face uncertainty with respect to the
pricing, coverage and reimbursement of valoctocogene roxaparvovec, if approved. In order to recover our research and development costs and commercialize
this one-time treatment on a profitable basis, we expect the cost of a single administration of valoctocogene roxaparvovec to be substantial. Therefore, we
expect that coverage and reimbursement by governments and other third-party payers will be essential for the vast majority of patients to be able to afford
valoctocogene roxaparvovec. Accordingly, sales of valoctocogene roxaparvovec, if approved, will depend substantially, both domestically and internationally,
on the extent to which its cost will be paid by third-party payers. Even if coverage is provided, the reimbursement amounts approved by third-party payers may
not be high enough to allow us to realize sufficient revenues from our investment in the development of valoctocogene roxaparvovec.

We also face uncertainty as to whether gene therapy will gain the acceptance of the public or the medical community. Even if we obtain regulatory

approval for valoctocogene roxaparvovec, the commercial success of valoctocogene roxaparvovec will depend, in part, on the acceptance of physicians,
patients and third-party payers of gene therapy products in general, and our product candidate in particular, as medically necessary, cost-effective and safe. In
particular, our success will depend upon physicians prescribing our product candidate in lieu of existing treatments they are already familiar with and for which
greater clinical data may be available. Moreover, physicians and patients may delay acceptance of valoctocogene roxaparvovec until the product candidate has
been on the market for a certain amount of time. Negative public opinion or more restrictive government regulations could have a negative effect on our
business and financial condition and may delay or impair the successful commercialization of, and demand for, valoctocogene roxaparvovec.

We have implemented a data access plan for valoctocogene roxaparvovec, which restricts our management’s review of emerging data from

these trials. Without access to ongoing data, management does not have the ability to adjust the trials based on such emerging data, which could
adversely impact the ultimate outcome of these trials.

In order to preserve the scientific integrity of the valoctocogene roxaparvovec trials and to allow us to only report on data at intervals that we believe

will be meaningful to investors, we have implemented a data access plan related to the ongoing open label trials, which is designed to significantly mirror
blinded trials. Pursuant to this plan, the ongoing emerging data are generally not collected by us, with the exception that certain specific data points are
collected and reviewed by a small group of medical personnel monitoring and managing the trial, and then, only to the extent necessary to allow them to
perform their monitoring responsibilities. As we disclose and publicly discuss prior data from these trials, such discussions do not incorporate any of the
currently emerging data that are being collected and reviewed by personnel monitoring the trial and, accordingly, this prior data may differ significantly from
more recent data that are only available to such personnel. Further, since our management does not have access to any of the ongoing data and does not
have the ability to adjust the trials based on such emerging data, the data access plan could adversely impact the ultimate outcome of the trials.

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If we continue to incur operating losses or are unable to sustain positive cash flows for a period longer than anticipated, we may be unable

to continue our operations at planned levels and be forced to reduce our operations.

Since we began operations in March 1997, we have been engaged in substantial research and development and capital investments, and we have

operated at a net loss for each year since our inception, with the exception of 2008 and 2010. Our future profitability and cash flows depend on our marketing
and selling of our products, the receipt of regulatory approval of our product candidates, our ability to successfully manufacture and market any products, either
by ourselves or jointly with others, our spending on our development programs, the impact of any possible future business development transactions and other
risks set forth in this Risk Factors section. The extent of our future losses and the timing of profitability and positive cash flows are highly uncertain. If we fail to
become profitable or are unable to sustain profitability and positive cash flows on a continuing basis, then we may be unable to continue our operations at
planned levels and be forced to reduce our operations.

If we fail to obtain the capital necessary to fund our operations, our financial results and financial condition will be adversely affected and

we will have to delay or terminate some or all of our product development programs.

As of December 31, 2019, we had cash, cash equivalents and investments totaling $1.2 billion and convertible debt obligations of $870.0 million

(undiscounted), which consisted of our 1.50% senior subordinated convertible notes due in 2020 (the 2020 Notes) and our 0.599% senior subordinated
convertible notes due in 2024 (the 2024 Notes and, together with the 2020 Notes, the Notes), which, if not converted, will be required to be repaid in cash at
maturity in October 2020 and August 2024, respectively. We will need cash not only to pay the ongoing interest due on the Notes during their term, but also to
repay the principal amount of the Notes if not converted.

In January 2016, we terminated our License and Commercialization Agreement with Ares Trading, S.A. (Merck Serono). Pursuant to the Termination
and Transition Agreement related to Kuvan and the Termination Agreement related to Palynziq, we are obligated to make certain payments to Merck Serono if
sales and development milestones are achieved. The remaining milestone payments that may become payable include up to a maximum of €60 million, in
cash, if future sales milestones are met with respect to Kuvan and Palynziq.

We may require additional financing to fund the repayment of the Notes, future milestone payments and our future operations, including the

commercialization of our products and product candidates currently under development, preclinical studies and clinical trials, and potential licenses and
acquisitions. We may be unable to raise additional financing due to a variety of factors, including our financial condition, the status of our product programs,
and the general condition of the financial markets. If we fail to raise any necessary additional financing we may have to delay or terminate some or all of our
product development programs and our financial condition and operating results will be adversely affected.

We expect to continue to spend substantial amounts of capital for our operations for the foreseeable future. The amount of capital we will need

depends on many factors, including:

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our ability to successfully market and sell our products;

the time and cost necessary to develop commercial manufacturing processes, including quality systems, and to build or acquire
manufacturing capabilities the progress and success of our preclinical studies and clinical trials (including studies and the manufacture of
materials);

the timing, number, size and scope of our preclinical studies and clinical trials;

the time and cost necessary to obtain regulatory approvals and the costs of post-marketing studies which may be required by regulatory
authorities;

the progress of research programs carried out by us;

our possible achievement of development and commercial milestones under agreements with third parties, such as the Kuvan and Palynziq
milestones under the termination agreements with Merck Serono;

any changes made to, or new developments in, our existing collaborative, licensing and other commercial relationships or any new
collaborative, licensing and other commercial relationships that we may establish;

Sanofi Genzyme’s (Genzyme) ability to continue to successfully commercialize Aldurazyme; and

whether our convertible debt is converted to common stock in the future.

Moreover, our fixed expenses such as rent, license payments, interest expense and other contractual commitments are substantial and may increase

in the future. These fixed expenses may increase because we may enter into:

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additional licenses and collaborative agreements;

additional contracts for product manufacturing; and

additional financing facilities or arrangements.

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We will need to raise additional funds from equity or debt securities, loans or collaborative agreements if we are unable to satisfy our liquidity

requirements. The sale of additional securities will result in additional dilution to our stockholders. Furthermore, additional financing may not be available in
amounts or on terms satisfactory to us or at all. This could result in the delay, reduction or termination of our research, which could harm our business.

We have incurred substantial indebtedness that may decrease our business flexibility, access to capital, and/or increase our borrowing

costs, which may adversely affect our operations and financial results.

As of December 31, 2019, we had $870.0 million (undiscounted) principal amount of indebtedness, including $375.0 million (undiscounted) principal

amount of indebtedness under the 2020 Notes and $495.0 million (undiscounted) principal amount of indebtedness under the 2024 Notes. In October 2018, we
also entered into an unsecured credit agreement (the 2018 Credit Facility) with Bank of America, N.A., as the administrative agent, swingline lender and a
lender, Citibank N.A. as letter of credit issuer and each of Merrill Lynch, Pierce, Fenner & Smith Incorporated, Citibank, N.A. and Wells Fargo Securities, LLC
as joint lead arrangers and joint bookrunners, providing up to $200.0 million in revolving loan commitments. Our indebtedness may:

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limit our ability to borrow additional funds for working capital, capital expenditures, acquisitions or other general business purposes;

limit our ability to use our cash flow or obtain additional financing for future working capital, capital expenditures, acquisitions or other general
business purposes;

require us to use a substantial portion of our cash flow from operations to make debt service payments;

limit our flexibility to plan for, or react to, changes in our business and industry;

place us at a competitive disadvantage compared to our less leveraged competitors; and

increase our vulnerability to the impact of adverse economic and industry conditions.

In addition, the 2018 Credit Facility contains, and any future indebtedness that we may incur may contain, financial and other restrictive covenants

that limit our ability to operate our business, raise capital or make payments under our other indebtedness. If we fail to comply with these covenants or to make
payments under our indebtedness when due, then we would be in default under that indebtedness, which could, in turn, result in that and our other
indebtedness becoming immediately payable in full. If we default under the 2018 Credit Facility, the outstanding borrowings thereunder could become
immediately due and payable, the 2018 Credit Facility lenders could refuse to permit additional borrowings under the facility, or it could lead to defaults under
agreements governing our current or future indebtedness, including the indentures governing the Notes. If we default under any of the Notes, such Notes could
become immediately due and payable and it could lead to defaults under the other Notes and/or the 2018 Credit Facility.

In addition, our ability to refinance our indebtedness will depend on the capital markets and our financial condition at such time.

Our outstanding indebtedness consists primarily of the 2020 Notes and 2024 Notes, which, if not converted, will be required to be repaid in cash at
maturity in October 2020 and August 2024, respectively. In addition, in the event the conditional conversion feature of the 2020 Notes is triggered, holders of
the 2020 Notes will be entitled to convert the 2020 Notes at any time during specified periods at their option, and the 2020 Notes will be freely convertible on or
after July 15, 2020. We may elect to settle conversions of the 2020 Notes in cash, in whole or in part, which could further affect our liquidity. While we could
seek to obtain additional third-party financing to pay for any amounts due in cash upon such events, we cannot be sure that such third-party financing will be
available on commercially reasonable terms, if at all.

We were required under applicable accounting rules to reclassify the outstanding principal of the 2020 Notes as a current rather than long-term liability

(because there are 12 months or less remaining until maturity), which resulted in a material reduction of our net working capital.

In addition, we also may borrow up to $200.0 million in revolving loans under the 2018 Credit Facility, which would be required to be repaid in cash at
maturity on October 19, 2021, except that if at least $100.0 million aggregate principal amount of the 2020 Notes remains outstanding on August 1, 2020 and
certain other conditions have not been met, we may be required to repay all amounts borrowed under the 2018 Credit Facility on August 1, 2020.

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If we fail to comply with manufacturing regulations, our financial results and financial condition will be adversely affected.

Before we can begin commercial manufacture of our products, regulatory authorities must approve marketing applications that identify manufacturing

facilities operated by us or our contract manufacturers that have passed regulatory inspection and manufacturing processes that are acceptable to the
regulatory authorities. In addition, our pharmaceutical manufacturing facilities are continuously subject to scheduled and unannounced inspection by the FDA
and international regulatory authorities, before and after product approval, to monitor and ensure compliance with cGMP and other regulations. Our
manufacturing facility in the U.S. has been approved by the FDA for the manufacture of Palynziq, and it has been approved by the FDA, the European
Commission (EC), and health agencies in other countries for the manufacture of Aldurazyme, Brineura, Naglazyme and Vimizim. Our manufacturing facility in
Shanbally, Cork, Ireland has been approved by the FDA, the EC, and health agencies in other countries for the manufacture of Vimizim, and it has been
approved by the FDA and the EMA as a formulated bulk drug substance manufacturing and quality control facility for Brineura. In addition, our third-party
manufacturers’ facilities involved with the manufacture of our products have also been inspected and approved by various regulatory authorities. Although we
are not involved in the day-to-day operations of our contract manufacturers, we are ultimately responsible for ensuring that our products are manufactured in
accordance with cGMP regulations.

Due to the complexity of the processes used to manufacture our products and product candidates, we may be unable to continue to pass or initially
pass federal or international regulatory inspections in a cost-effective manner. For the same reason, any potential third-party manufacturer of our products or
our product candidates may be unable to comply with cGMP regulations in a cost-effective manner and may be unable to initially or continue to pass a federal
or international regulatory inspection.

If we, or third-party manufacturers with whom we contract, are unable to comply with manufacturing regulations, we may be subject to delay of

approval of our product candidates, warning or untitled letters, fines, unanticipated compliance expenses, recall or seizure of our products, total or partial
suspension of production and/or enforcement actions, including injunctions, and criminal or civil prosecution. These possible sanctions would adversely affect
our financial results and financial condition.

If we are unable to successfully develop and maintain manufacturing processes for our product candidates to produce sufficient quantities

at acceptable costs, we may be unable to support a clinical trial or be forced to terminate a program, or if we are unable to produce sufficient
quantities of our products at acceptable costs, we may be unable to meet commercial demand, lose potential revenue, have reduced margins or be
forced to terminate a program.

Due to the complexity of manufacturing our product candidates and products, we may not be able to manufacture sufficient quantities. Our inability to
produce enough of our product candidate at acceptable costs may result in the delay or termination of development programs. With respect to our commercial
portfolio, we may not be able to manufacture our products successfully with a commercially viable process or at a scale large enough to support their
respective commercial markets or at acceptable margins.

The development of commercially viable manufacturing processes typically is very difficult to achieve and is often very expensive and may require
extended periods of time. Changes in manufacturing processes (including manufacturing cell lines), equipment or facilities (including moving manufacturing
from one of our facilities to another one of our facilities or a third-party facility, or from a third-party facility to one of our facilities) may require us to complete
clinical trials to receive regulatory approval of any manufacturing modifications.

With respect to valoctocogene roxaparvovec, gene therapy products are relatively novel and complex and have only in limited cases been
manufactured at scales sufficient for pivotal trials and commercialization. Few pharmaceutical contract manufacturers specialize in gene therapy products and
those that do are still developing appropriate processes and facilities for large-scale production. We invested a considerable amount of capital building our own
commercial gene therapy manufacturing facility, which may be subject to significant impairment if our gene therapy programs are unsuccessful. As we develop,
seek to optimize and operate the valoctocogene roxaparvovec manufacturing process, we will likely face technical and scientific challenges, considerable
capital costs, and potential difficulty in recruiting and hiring experienced, qualified personnel. There may also be unexpected technical or operational issues
during clinical or commercial manufacturing campaigns. As a result, we could experience manufacturing delays that prevent us from completing our clinical
studies in a timely manner, if at all, or commercializing valoctocogene roxaparvovec on a profitable basis, if at all.

Also, we may be required to demonstrate product comparability between a biological product made after a manufacturing change and the product

made before implementation of the change through additional types of analytical and functional testing or may have to complete additional clinical studies. If we
contract for manufacturing services with an unproven process, our contractor is subject to the same uncertainties, high standards and regulatory controls, and
may therefore experience difficulty if further process development is necessary.

Even a developed manufacturing process can encounter difficulties. Problems may arise during manufacturing for a variety of reasons, including

human error, mechanical breakdowns, problems with raw materials and cell banks, malfunctions of internal information technology systems, and other events
that cannot always be prevented or anticipated. Many of the processes

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include biological systems, which add significant complexity, as compared to chemical synthesis. We expect that, from time to time, consistent with
biotechnology industry expectations, certain production lots will fail to produce product that meets our quality control release acceptance criteria. To date, our
historical failure rates for all of our product programs, including Aldurazyme, Brineura, Naglazyme, Palynziq and Vimizim, have been within our expectations,
which are based on industry norms. If the failure rate increased substantially, we could experience increased costs, lost revenue, damage to customer
relations, time and expense investigating the cause and, depending upon the cause, similar losses with respect to other lots or products. If problems are not
discovered before the product is released to the market, recall and product liability costs may also be incurred.

In order to produce product within our time and cost parameters, we must continue to produce product within our expected success rate and yield
expectations. Because of the complexity of our manufacturing processes, it may be difficult or impossible for us to determine the cause of any particular lot
failure and we must effectively take corrective action in response to any failure in a timely manner.

We have entered into contractual relationships with third-party manufacturers to produce active ingredients in Kuvan and Palynziq. If those
manufacturers are unwilling or unable to fulfill their contractual obligations, we may be unable to meet demand for Kuvan and Palynziq, or sell these products
at all, we may lose potential revenue, and we may be forced to terminate a program. We have contracts for the production of final product for Kuvan and
Palynziq. We also currently rely on third parties for portions of the manufacture of Aldurazyme, Brineura, Naglazyme, Palynziq and Vimizim. If those
manufacturers are unwilling or unable to fulfill their contractual obligations or satisfy demand outside of or in excess of the contractual obligations, we may be
unable to meet demand for these products or sell these products at all and we may lose potential revenue. Further, the availability of suitable contract
manufacturing capacity at scheduled or optimum times is not certain.

In addition, our manufacturing processes subject us to a variety of federal, state and local laws and regulations governing the use, generation,

manufacture, storage, handling and disposal of hazardous materials and wastes resulting from their use. We incur significant costs in complying with these
laws and regulations.

Supply interruptions may disrupt our inventory levels and the availability of our products and product candidates and cause delays in

obtaining regulatory approval for our product candidates, or harm our business by reducing our revenues.

We depend on single-source suppliers for critical raw materials and a limited number of manufacturing facilities to manufacture our finished products

and product candidates. Numerous factors could cause interruptions in the supply or manufacture of our products and product candidates, including:

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timing, scheduling and prioritization of production by our contract manufacturers or a breach of our agreements by our contract
manufacturers;

labor interruptions;

changes in our sources for manufacturing;

the timing and delivery of shipments;

our failure to locate and obtain replacement suppliers and manufacturers as needed on a timely basis; and

conditions affecting the cost and availability of raw materials.

If one of our suppliers or manufacturers fails or refuses to supply us with necessary raw materials or finished products or product candidates on a
timely basis or at all, it would take a significant amount of time and expense to qualify a new supplier or manufacturer. We may not be able to obtain active
ingredients or finished products from new suppliers or manufacturers on acceptable terms and at reasonable prices, or at all.

Any interruption in the supply of finished products could hinder our ability to distribute finished products to meet commercial demand and adversely

affect our financial results and financial condition.

With respect to our product candidates, production of product is necessary to perform clinical trials and successful registration batches are necessary
to file for approval to commercially market and sell product candidates. Delays in obtaining clinical material or registration batches could adversely impact our
clinical trials and delay regulatory approval for our product candidates.

Because the target patient populations for our products are small, we must achieve significant market share and maintain high per-patient

prices for our products to achieve profitability.

All of our products target diseases with small patient populations. As a result, our per-patient prices must be relatively high

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in order to recover our development and manufacturing costs and achieve profitability. For Brineura, Naglazyme and Vimizim in particular, we must market
worldwide to achieve significant market penetration of the product. In addition, because the number of potential patients in each disease population is small, it
is not only important to find patients who begin therapy to achieve significant market penetration of the product, but we also need to be able to maintain these
patients on therapy for an extended period of time. Due to the expected costs of treatment for our products, we may be unable to maintain or obtain sufficient
market share at a price high enough to justify our product development efforts and manufacturing expenses.

If we fail to obtain an adequate level of coverage and reimbursement for our products by third-party payers, the sales of our products

would be adversely affected or there may be no commercially viable markets for our products.

The course of treatment for patients using our products is expensive. We expect patients to need treatment for extended periods, and for some
products throughout the lifetimes of the patients. We expect that most families of patients will not be capable of paying for this treatment themselves. There will
be no commercially viable market for our products without coverage and reimbursement from third-party payers. Additionally, even if there is a commercially
viable market, if the level of reimbursement is below our expectations, our revenue and gross margins will be adversely affected.

Third-party payers, such as government or private healthcare insurers, carefully review and increasingly challenge the prices charged for drugs.

Reimbursement rates from private companies vary depending on the third-party payer, the insurance plan and other factors. Obtaining coverage and adequate
reimbursement for our products may be particularly difficult because of the higher prices often associated with drugs administered under the supervision of a
physician. Reimbursement systems in international markets vary significantly by country and by region, and reimbursement approvals must be obtained on a
country-by-country basis.

Government authorities and other third-party payers are developing increasingly sophisticated methods of controlling healthcare costs, such as by

limiting coverage and the amount of reimbursement for particular medications. Increasingly, third-party payers are requiring that drug companies provide them
with predetermined discounts from list prices as a condition of coverage, are using restrictive formularies and preferred drug lists to leverage greater discounts
in competitive classes, and are challenging the prices charged for medical products. Further, no uniform policy requirement for coverage and reimbursement
for drug products exists among third-party payers in the U.S. Therefore, coverage and reimbursement for drug products can differ significantly from payer to
payer. As a result, the coverage determination process is often a time-consuming and costly process that will require us to provide scientific and clinical support
for the use of our products to each payer separately, with no assurance that coverage and adequate reimbursement will be applied consistently or obtained in
the first instance.

We cannot be sure that coverage and reimbursement will be available for any product that we commercialize or will continue to be available for any

product that we have commercialized and, if reimbursement is available, what the level of reimbursement will be. Coverage and reimbursement may impact the
demand for, or the price of, any product candidate for which we obtain marketing approval. If coverage and reimbursement are not available or reimbursement
is available only to limited levels, we may not successfully commercialize any product candidate for which we obtain marketing approval or continue to market
any product that has already been commercialized.

Reimbursement in the EU and many other territories must be negotiated on a country-by-country basis and in many countries the product cannot be

commercially launched until reimbursement is approved. The timing to complete the negotiation process in each country is highly uncertain, and in some
countries we expect that it will exceed 12 months. Even after a price is negotiated, countries frequently request or require reductions to the price and other
concessions over time.

For our future products, we will not know what the reimbursement rates will be until we are ready to market the product and we actually negotiate the
rates. If we are unable to obtain sufficiently high reimbursement rates for our products, they may not be commercially viable or our future revenues and gross
margins may be adversely affected.

A significant portion of our international sales are made based on special access programs, and changes to these programs could

adversely affect our product sales and revenue in these countries.

We make a significant portion of our international sales of Naglazyme and Vimizim through special access or “named patient” programs, which do not
require full product approval, and we expect a significant portion of our international sales of Brineura will also be through such programs. The specifics of the
programs vary from country to country. Generally, special approval must be obtained for each patient. The approval normally requires an application or a
lawsuit accompanied by evidence of medical need. Generally, the approvals for each patient must be renewed from time to time.

These programs are not well defined in some countries and are subject to changes in requirements and funding levels. Any change to these programs

could adversely affect our ability to sell our products in those countries and delay sales. If the programs are not funded by the respective government, there
could be insufficient funds to pay for all patients. Further, governments have and may continue to undertake unofficial measures to limit purchases of our
products, including initially denying coverage for purchasers, delaying orders and denying or taking excessively long to approve customs clearance. Any such
actions could materially delay or reduce our revenues from such countries.

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Without the special access programs, we would need to seek full product approval to commercially market and sell our products in certain

jurisdictions. This can be an expensive and time-consuming process and may subject our products to additional price controls. Because the number of patients
is so small in some countries, it may not be economically feasible to seek and maintain a full product approval, and therefore the sales in such country would
be permanently reduced or eliminated. For all of these reasons, if the special access programs that we are currently using are eliminated or restricted, our
revenues could be adversely affected.

If we fail to compete successfully with respect to product sales, we may be unable to generate sufficient sales to recover our expenses

related to the development of a product program or to justify continued marketing of a product and our revenue could be adversely affected.

Our competitors may develop, manufacture and market products that are more effective or less expensive than ours. They may also obtain regulatory

approvals for their products faster than we can obtain them (including those products with orphan drug designation, which may prevent us from marketing our
product entirely) or commercialize their products before we do. With respect to valoctocogene roxaparvovec, if the product candidate is approved, we will face
a highly developed and competitive market for hemophilia A treatments. As we commercialize valoctocogene roxaparvovec, if approved, we may face intense
competition from large pharmaceutical companies with extensive resources and established relationships in the hemophilia A community. If we do not compete
successfully, our revenue would be adversely affected, and we may be unable to generate sufficient sales to recover our expenses related to the development
of a product program or to justify continued marketing of a product.

Government price controls or other changes in pricing regulation could restrict the amount that we are able to charge for our current and

future products, which would adversely affect our revenue and results of operations.

We expect that coverage and reimbursement may be increasingly restricted in all the markets in which we sell our products. The escalating cost of

healthcare has led to increased pressure on the healthcare industry to reduce costs. In particular, drug pricing by pharmaceutical companies has recently come
under increased scrutiny and continues to be subject to intense political and public debate in the U.S. and abroad. Governmental and private third-party payers
have proposed healthcare reforms and cost reductions. A number of federal and state proposals to control the cost of healthcare, including the cost of drug
treatments, have been made in the U.S. Specifically, there have been several recent U.S. congressional inquiries and proposed bills and enacted legislation
designed to, among other things, bring more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, and
reform government program reimbursement methodologies for drugs. Further, Congress and the executive branch have each indicated that they will continue
to seek new legislative and/or administrative measures to control drug costs. In some international markets, the government controls the pricing, which can
affect the profitability of drugs. Current government regulations and possible future legislation regarding healthcare may affect coverage and reimbursement for
medical treatment by third-party payers, which may render our products not commercially viable or may adversely affect our future revenues and gross
margins.

International operations are also generally subject to extensive price and market regulations, and there are many proposals for additional cost-

containment measures, including proposals that would directly or indirectly impose additional price controls or mandatory price cuts or reduce the value of our
intellectual property portfolio. As part of these cost containment measures, some countries have imposed and continue to propose revenue caps limiting the
annual volume of sales of our products. Some of these caps are significantly below the actual demand in certain countries, and if the trend regarding revenue
caps continues, our future revenues and gross margins may be adversely affected.

We cannot predict the extent to which our business may be affected by these or other potential future legislative or regulatory developments.
However, future price controls or other changes in pricing regulation or negative publicity related to our product pricing or the pricing of pharmaceutical drugs
generally could restrict the amount that we are able to charge for our current and future products or our sales volume, which would adversely affect our
revenue and results of operations.

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Government healthcare reform could increase our costs and adversely affect our revenue and results of operations.

Our industry is highly regulated and changes in law may adversely impact our business, operations or financial results. In the U.S., the Patient

Protection and Affordable Care Act of 2010, as amended by the Health Care and Education Reconciliation Act of 2010 (the PPACA) is a sweeping measure
intended to, among other things, expand healthcare coverage within the U.S., primarily through the imposition of health insurance mandates on employers and
individuals and expansion of the Medicaid program. Several provisions of the law have affected us and increased certain of our costs. Since its enactment,
there have been judicial and congressional challenges to certain aspects of the PPACA, as well as recent efforts by the U.S. Presidential administration to
repeal or replace certain aspects of the PPACA, and we expect there will be additional challenges and amendments to the PPACA in the future. Since January
2017, the U.S. President has signed two Executive Orders and other directives designed to delay, circumvent, or loosen certain requirements mandated by the
PPACA. Concurrently, Congress has considered legislation that would repeal or repeal and replace all or part of the PPACA. While Congress has not passed
legislation repealing the PPACA in its entirety, it has enacted laws that modify certain provisions of the PPACA such as removing penalties for not complying
with the PPACA’s individual mandate to carry health insurance, delaying the implementation of certain ACA-mandated fees, and increasing the point-of-sale
discount that is owed by pharmaceutical manufacturers who participate in Medicare Part D. Additionally, on December 14, 2018, a Texas U.S. District Court
Judge ruled that the PPACA is unconstitutional in its entirety because the individual mandate was repealed by Congress as part of the Tax Cuts & Jobs Act.
While the Texas U.S. District Court Judge, as well as the current U.S. Presidential administration and the Centers for Medicare and Medicaid Services (CMS),
have stated that the ruling will have no immediate effect pending appeal of the decision, it is unclear how this decision, subsequent appeals, and other efforts to
repeal and replace the PPACA will impact the PPACA and our business. In addition, other legislative changes have been adopted since the PPACA was
enacted. Some of these changes have resulted in additional reductions in Medicare and other healthcare funding, which could have a material adverse effect
on our customers and, accordingly, our financial operations.

We anticipate that the PPACA, as well as other healthcare reform measures that may be adopted in the future in the U.S. or abroad, may result in

more rigorous coverage criteria and an additional downward pressure on the reimbursement our customers may receive for our products. Recently there has
been heightened governmental scrutiny in countries worldwide over the manner in which manufacturers set prices for their marketed products.

In the U.S., there have been several recent congressional inquiries and proposed and enacted federal and state legislation designed to, among other

things, bring more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, reduce the cost of drugs under
Medicare, and reform government program reimbursement methodologies for drug products. For example, at the federal level, the U.S. Presidential
administration’s budget proposal for the fiscal year 2021 includes a $135.0 billion allowance to support legislative proposals seeking to reduce drug prices,
increase competition, lower out-of-pocket drug costs for patients, and increase patient access to lower-cost generic and biosimilar drugs. Moreover, the U.S.
Presidential administration previously released a “Blueprint” to lower drug prices and reduce out of pocket costs of drugs that contains additional proposals to
increase manufacturer competition, increase the negotiating power of certain federal healthcare programs, incentivize manufacturers to lower the list price of
their products and reduce the out of pocket costs of drug products paid by consumers. Although a number of these and other measures may require additional
authorization to become effective, Congress and the U.S. Presidential administration have each indicated that it will continue to seek new legislative and/or
administrative measures to control drug costs. Any reduction in reimbursement from Medicare and other government programs may result in a similar reduction
in payments from private payers. In addition, individual states in the United States have also increasingly passed legislation and implemented regulations
designed to control pharmaceutical product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and
marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing.
Moreover, regional healthcare authorities and individual hospitals are increasingly using bidding procedures to determine what pharmaceutical products and
which suppliers will be included in their prescription drug and other healthcare programs.

Likewise, in many EU countries, legislators and other policymakers continue to propose and implement healthcare cost-containing measures in

response to the increased attention being paid to healthcare costs in the EU. Certain of these changes could impose limitations on the prices we will be able to
charge for our products and any approved product candidates or the amounts of reimbursement available for these products from governmental and private
third-party payers, may increase the tax obligations on pharmaceutical companies or may facilitate the introduction of generic competition with respect to our
products. Further, an increasing number of EU countries and other foreign countries use prices for medicinal products established in other countries as
“reference prices” to help determine the price of the product in their own territory. Consequently, a downward trend in prices of medicinal products in some
countries could contribute to similar downward trends elsewhere. Moreover, in order to obtain reimbursement for our products in some countries, we may be
required to conduct clinical trials that compare the cost-effectiveness of our products to other available therapies.

Legally mandated price controls on payment amounts by governmental and private third-party payers or other restrictions could harm our business,
results of operations, financial condition and prospects. The implementation of cost containment measures or other healthcare reforms may prevent us from
being able to generate revenue, attain profitability or commercialize our products.

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For more information regarding government healthcare reform, see “Government Regulation - Health Reform” in Part I, Item 1 of this Annual Report

on Form 10-K for the year ended December 31, 2019.

We face credit risks from government-owned or sponsored customers outside of the U.S. that may adversely affect our results of

operations.

Our product sales to government-owned or supported customers in various countries outside of the U.S. are subject to significant payment delays due
to government funding and reimbursement practices. This has resulted and may continue to result in an increase in days sales outstanding due to the average
length of time that we have accounts receivable outstanding. If significant changes were to occur in the reimbursement practices of these governments or if
government funding becomes unavailable, we may not be able to collect on amounts due to us from these customers and our results of operations would be
adversely affected.

If we are found in violation of healthcare laws or privacy and data protection laws, we may be required to pay penalties, be subjected to

scrutiny by regulators or governmental entities, or be suspended from participation in government healthcare programs, which may adversely
affect our business, financial condition and results of operations.

We are subject to various healthcare laws and regulations in the U.S. and internationally, including anti-kickback laws, false claims laws, data privacy

and security laws, and laws related to ensuring compliance. In the U.S., the federal Anti-Kickback Statute makes it illegal for any person or entity, including a
pharmaceutical company, to knowingly and willfully offer, solicit, pay or receive any remuneration, directly or indirectly, in exchange for or to induce the referral
of business, including the purchase, order or prescription of a particular drug, for which payment may be made under federal healthcare programs, such as
Medicare and Medicaid. Under the federal Anti-Kickback Statute and related regulations, certain arrangements are deemed not to violate the federal Anti-
Kickback Statute if they fit within a statutory exception or regulatory safe harbor. However, the exceptions and safe harbors are drawn narrowly, and practices
that involve remuneration not intended to induce prescribing, purchases or recommendations may be subject to scrutiny if they do not qualify for an exception
or safe harbor. Our practices may not in all cases meet all of the criteria for safe harbor protection from Anti-Kickback liability, although we seek to comply with
these safe harbors. Many states have adopted laws similar to the federal Anti-Kickback Statute, some of which apply to referral of patients for healthcare
services reimbursed by any source, not just governmental payers.

Federal and state false claims laws, including the civil False Claims Act, prohibit any person or entity from knowingly presenting, or causing to be

presented, a false claim for payment to the federal government, or knowingly making, or causing to be made, a false statement to have a false claim paid, or
knowingly making, using, or causing to be made or used, a false record or statement to avoid, decrease or conceal an obligation to pay money to the federal
government. In addition, certain marketing practices, including off-label promotion, may also violate false claims laws. Under the Health Insurance Portability
and Accountability Act of 1996 (HIPAA), we also are prohibited from knowingly and willfully executing a scheme to defraud any healthcare benefit program,
including private payers, or knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false, fictitious or fraudulent
statement in connection with the delivery of or payment for healthcare benefits, items or services.

In addition, recent healthcare reform legislation has strengthened these laws in the U.S. For example, the PPACA, among other things, amends the
intent requirement of the federal Anti-Kickback Statute and criminal healthcare fraud statutes. A person or entity no longer needs to have actual knowledge of
these statutes or specific intent to violate them in order to commit a violation. Moreover, the PPACA provides that the government may assert that a claim
including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the civil False
Claims Act.

HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act and its implementing regulations, also imposes

obligations, including mandatory contractual terms, on certain types of individuals and entities, with respect to safeguarding the privacy, integrity, availability,
security and transmission of individually identifiable health information. Many state and foreign laws also govern the privacy and security of health information.
They often differ from each other in significant ways and often are not preempted by HIPAA, thus complicating compliance efforts. The global data protection
landscape is rapidly evolving, and implementation standards and enforcement practices are likely to remain uncertain for the foreseeable future. In the United
States, California recently enacted the California Consumer Privacy Act (CCPA), which took effect on January 1, 2020. The CCPA gives California residents
expanded rights to access and delete their personal information, opt out of certain personal information sharing, and receive detailed information about how
their personal information is used. The CCPA provides for civil penalties for violations, as well as a private right of action for data breaches that is expected to
increase data breach litigation. The CCPA has increased our compliance costs and may increase our potential liability. Some observers have noted that the
CCPA could mark the beginning of a trend toward more stringent privacy legislation in the U.S., which could increase our potential liability and adversely affect
our business.

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The European Regulation 2016/679, known as the General Data Protection Regulation (GDPR), as well as EU Member State implementing

legislations, apply to the collection and processing of personal data, including health-related information, by companies located in the EU, or in certain
circumstances, by companies located outside of the EU and processing personal information of individuals located in the EU. These laws impose strict
obligations on the ability to process personal data, including health-related information, in particular in relation to their collection, use, disclosure and transfer.
These include several requirements relating to (i) obtaining, in some situations, the consent of the individuals to whom the personal data relates, (ii) the
information provided to the individuals about how their personal information is used, (iii) ensuring the security and confidentiality of the personal data, (iv) the
obligation to notify regulatory authorities and affected individuals of personal data breaches, (v) extensive internal privacy governance obligations, and (vi)
obligations to honor rights of individuals in relation to their personal data (for example, the right to access, correct and delete their data). The GDPR prohibits
the transfer of personal data to countries outside of the European Economic Area (EEA), such as the United States, which are not considered by the European
Commission to provide an adequate level of data protection. Switzerland has adopted similar restrictions. Although there are legal mechanisms to allow for the
transfer of personal data from the EEA and Switzerland to the United States, they are subject to legal challenges and uncertainty about compliance with EU
data protection laws remains.

Potential pecuniary fines for noncompliant companies may be up to the greater of €20 million or 4% of annual global revenue. The GDPR has
increased our responsibility and liability in relation to personal data that we process, and we may be required to put in place additional potential mechanisms to
ensure compliance with the new EU data protection rules.

Substantial new laws and regulations affecting compliance have also been adopted in the U.S. and certain foreign countries, which may require us to

modify our business practices with healthcare practitioners. For example, in the U.S., the PPACA, through the Physician Payments Sunshine Act, requires
certain drug, biologicals and medical supply manufacturers to collect and report to CMS information on payments or transfers of value to physicians and
teaching hospitals, as well as investment and ownership interests held by physicians and their immediate family members during the preceding calendar year.
Effective January 1, 2022, manufacturers will also be required to report on payments or transfers of value to physician assistants, nurse practitioners or clinical
nurse specialists, certified registered nurse anesthetists, and certified nurse-midwives. In addition, there has been a recent trend of increased state regulation
of payments made to physicians. Certain states and/or local jurisdictions mandate implementation of compliance programs, compliance with the Office of
Inspector General Compliance Program Guidance for Pharmaceutical Manufacturers and the Pharmaceutical Research and Manufacturers of America
(PhRMA) Code on Interactions with Healthcare Professionals, the registration of pharmaceutical sales representatives and/or the tracking and reporting of gifts,
compensation and other remuneration to physicians, marketing expenditures, and drug pricing. Likewise, in many foreign countries there is an increasing focus
on the relationship between drug companies and healthcare practitioners. Recently enacted foreign legislation creates reporting obligations on payments, gifts
and benefits made to these professionals; however, implementing regulations enacting such laws are still pending and subject to varying interpretations by
courts and government agencies. The shifting regulatory environment and the need to implement systems to comply with multiple jurisdictions with different
compliance and/or reporting requirements increases the costs of maintaining compliance and the possibility that we may violate one or more of the
requirements and be subject to fines or sanctions.

Due to the breadth of the healthcare and privacy and data protection laws described above, the narrowness of available statutory and regulatory

exceptions and safe harbors and the increased focus by law enforcement agencies in enforcing such laws, our business activities could be subject to challenge
under one or more of such laws. If we are found in violation of one of these laws, we may be subject to significant criminal, civil or administrative sanctions,
including damages, fines, disgorgement, imprisonment, contractual damages, reputational harm, diminished profits and future earnings, additional reporting
requirements and oversight if we become subject to a corporate integrity agreement or similar agreement to resolve allegations of non-compliance with these
laws, curtailment of our operations, and debarment, suspension or exclusion from participation in government healthcare programs, any of which could
adversely affect our business, financial condition and results of operations.

We conduct a significant amount of our sales and operations outside of the U.S., which subjects us to additional business risks that could

adversely affect our revenue and results of operations.

A significant portion of the sales of Aldurazyme, Brineura, Kuvan, Naglazyme and Vimizim are generated from countries other than the U.S. Similarly,

we expect a significant portion of the sales of Palynziq to be generated from countries other than the U.S. We have operations in Canada and in several
European, Middle Eastern, Asian, and Latin American countries. We expect that we will continue to expand our international operations in the future.
International operations inherently subject us to a number of risks and uncertainties, including:

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the increased complexity and costs inherent in managing international operations;

diverse regulatory and compliance requirements, and changes in those requirements that could restrict our ability to manufacture, market
and sell our products;

political and economic instability;

diminished protection of intellectual property in some countries outside of the U.S.;

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trade protection measures and import or export licensing requirements;

difficulty in staffing and managing international operations;

differing labor regulations and business practices;

potentially negative consequences from changes in or interpretations of tax laws;

changes in international medical reimbursement policies and programs;

financial risks such as longer payment cycles, difficulty collecting accounts receivable, exposure to fluctuations in foreign currency exchange
rates and potential currency controls imposed by foreign governments;

regulatory and compliance risks that relate to maintaining accurate information and control over sales and distributors’ and service providers’
activities that may fall within the purview of the Foreign Corrupt Practices Act (the FCPA); and

rapidly evolving global laws and regulations relating to data protection and the privacy and security of commercial and personal information.

Any of these factors may, individually or as a group, have a material adverse effect on our business and results of operations.

As we continue to expand our existing international operations, we may encounter new risks. For example, as we focus on building our international

sales and distribution networks in new geographic regions, we must continue to develop relationships with qualified local distributors and trading companies. If
we are not successful in developing and maintaining these relationships, we may not be able to grow sales in these geographic regions. These or other similar
risks could adversely affect our revenue and profitability.

The U.K.’s withdrawal from the EU may have a negative effect on global economic conditions, financial markets and our business, which

could adversely affect our revenue and results of operations.

In June 2016, a majority of the eligible members of the electorate in the United Kingdom (U.K.) voted to withdraw from the EU in a national
referendum (Brexit). On March 29, 2017, the U.K.’s Prime Minister formally delivered the notice of withdrawal. After significant negotiation between the U.K.
and the EU, the withdrawal of the U.K. from the EU took effect on January 31, 2020. There is now a transition period while the U.K. and EU negotiate additional
arrangements, including their future trading terms. The U.K. has stated that it wants the transition period to expire, and the future trading terms to be agreed, by
December 31, 2020.

The uncertainties regarding the U.K.’s future relationship with the EU, have had and may continue to have an adverse effect on global economic

conditions and the stability of global financial markets. In particular, depending on what terms are agreed between the U.K. and the EU, if any, it could lead to a
period of considerable uncertainty in relation to global financial and banking markets, as well as on regulatory processes in Europe and the EEA. Lack of clarity
about future U.K. laws and regulations as the U.K. determines which EU rules and regulations to replace or replicate, including financial laws and regulations,
tax and free trade agreements, intellectual property rights, supply chain logistics, environmental, health and safety laws and regulations, immigration laws and
employment laws, could decrease foreign direct investment in all markets, increase costs, depress economic activity and restrict access to capital.

If the U.K. and the EU are unable to negotiate acceptable future trading terms or if other EU countries pursue withdrawal, barrier-free access between
the U.K. and other EU or EEA countries could be diminished or eliminated, which could make our doing business in the EU more difficult. As a result of Brexit,
we may face disruptions in our supply chain, inventory management, manufacturing process and product distribution network, which could adversely affect our
business and results of operations. Moreover, Brexit may also lead to new regulatory costs and challenges that could have a material adverse effect on our
operations. The EMA has issued guidance to marketing authorization holders of centrally authorized medicinal products regarding certain requirements that
need to be considered as part of Brexit, such as the requirement for the marketing authorization holder of a product centrally approved by the EC to be
established in the EU, and the requirement for some activities relating to centrally approved products, such as batch release and pharmacovigilance, be
performed in the EU. Furthermore, there are few indications of the effect Brexit will have on the pathway to obtaining marketing approval for any of our product
candidates in the U.K.

U.S. export control and economic sanctions may adversely affect our business, financial condition and operating results. Moreover,

compliance with such regulatory requirements may increase our costs and negatively impact our ability to sell our products and collect cash from
customers.

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Our products are subject to U.S. export control laws and regulations, including the U.S. Export Administration Regulations and various economic and

trade sanctions regulations administered by the U.S. Treasury Department’s Office of Foreign Assets Control (OFAC). Exports of our products and solutions
must be made in compliance with these laws and regulations. Changes to these laws and regulations, or to the countries, governments, persons or activities
targeted by such laws, could result in decreased use of our products, or hinder our ability to export or sell our products to existing or potential customers, which
would likely adversely affect our results of operations, financial condition or strategic objectives. If we fail to comply with these laws and regulations, we could
be subject to substantial civil or criminal penalties, including the possible loss of export or import privileges and fines.

We rely on a general license from OFAC to sell our medicines for eventual use by hospital and clinic end-users in Iran. The use of this OFAC general

license requires us to observe strict conditions with respect to products sold, end-user limitations and payment requirements. Although we believe we have
maintained compliance with the general license requirements, there can be no assurance that the general license will not be revoked, be renewed in the future
or that we will remain in compliance. A violation of the OFAC general license could result in substantial fines, sanctions, civil or criminal penalties, competitive
or reputational harm, litigation or regulatory action and other consequences that might adversely affect our results of operations, financial condition or strategic
objectives.

Moreover, U.S. export control and economic sanctions may make operating in certain countries more difficult and expensive. For example, we may be
unable to find distributors or financial institutions willing to facilitate the sale of our products and collection of cash from such sales in a cost-effective manner, if
at all.

Failure to comply with applicable anti-corruption legislation could result in fines, criminal penalties and materially adversely affect our

business, financial condition and results of operations.

We are required to comply with anti-corruption and anti-bribery laws in the jurisdictions in which we operate, including the FCPA in the United States,

the U.K. Bribery Act and other similar laws in other countries in which we do business. We operate in a number of countries that are recognized to have a
reputation for corruption and pose an increased risk of corrupt practices. We also regularly interact with government regulators in many countries, including
those that are considered higher risk for corruption, in order to secure regulatory approval to manufacture and distribute our products. The anti-corruption and
anti-bribery laws to which we are subject generally prohibit companies and their intermediaries from making improper payments to foreign officials or other
persons for the purposes of influencing official decisions or obtaining or retaining business and/or other benefits. These laws also require us to make and keep
books and records that accurately and fairly reflect our transactions and to devise and maintain an adequate system of internal accounting controls. As part of
our business, we deal with state-owned business enterprises, the employees and representatives of which may be considered foreign officials for purposes of
applicable anti-corruption laws.

Although we have adopted policies and procedures designed to ensure that we, our employees and third-party agents will comply with such laws,

there can be no assurance that such policies or procedures will work effectively at all times or protect us against liability under these or other laws for actions
taken by our employees, partners and other third parties with respect to our business. If we are not in compliance with anti-corruption laws and other laws
governing the conduct of business with government entities and/or officials (including local laws), we may be subject to criminal and civil penalties and other
remedial measures, which could harm our business, financial condition, results of operations, cash flows and prospects. Investigations of any actual or alleged
violations of such laws or policies related to us could harm our business, financial condition, results of operations, cash flows and prospects.

Moreover, there has been enhanced scrutiny of company-sponsored patient assistance programs, including insurance premium and co-pay
assistance programs and donations to third-party charities that provide such assistance. There has also been enhanced scrutiny by governments on
reimbursement support offerings, clinical education programs and promotional speaker programs. If we, our third-party agents or donation recipients are
deemed to have failed to comply with laws, regulations or government guidance in any of these areas, we could be subject to criminal or civil sanctions. Any
similar violations by our competitors could also negatively impact our industry reputation and increase scrutiny over our business and our products

Changes in funding for the FDA, the EMA and other government agencies or government shutdowns could hinder the ability of such
agencies to hire and retain key leadership and other personnel or otherwise prevent those agencies from performing normal functions on which the
operation of our business may rely, which could negatively impact our business.

Changes in funding levels of government agencies can affect their ability to hire and retain key personnel and carry out their normal functions that
support our business. For example, the ability of the FDA to timely review and approve INDs or marketing authorizations for our product candidates may be
hindered by a lack of resources and qualified personnel. In addition, funding of other government agencies on which our operations rely, including those that
fund research and development activities, is subject to the political budget process, which is inherently fluid and unpredictable.

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Government shutdowns could also impact the ability of government agencies to function normally and support our operations. For example, the U.S.

federal government has shut down repeatedly since 1980, including for a period of 35 days beginning on December 22, 2018. During a shutdown, certain
regulatory agencies, such as the FDA, have had to furlough key personnel and stop critical activities. If a prolonged government shutdown occurs, it could
significantly impact the ability of the FDA to timely review and process our regulatory submissions, which could have a material adverse effect on our business.

Our international operations pose currency risks, which may adversely affect our operating results and net income.

A significant and growing portion of our revenues and earnings, as well as our substantial international net assets, are exposed to changes in foreign
exchange rates. As we operate in multiple foreign currencies, including the Euro, the Brazilian Real, the Great British Pound, the Canadian Dollar and several
other currencies, changes in those currencies relative to the U.S. Dollar (USD) will impact our revenues and expenses. If the USD were to weaken against
another currency, assuming all other variables remained constant, our revenues would increase, having a positive impact on earnings, and our overall
expenses would increase, having a negative impact on earnings. Conversely, if the USD were to strengthen against another currency, assuming all other
variables remained constant, our revenues would decrease, having a negative impact on earnings, and our overall expenses would decrease, having a positive
impact on earnings. In addition, because our financial statements are reported in USD, changes in currency exchange rates between the USD and other
currencies have had, and will continue to have, an impact on our results of operations. Therefore, significant changes in foreign exchange rates can impact our
results and our financial guidance.

We implement currency hedges intended to reduce our exposure to changes in certain foreign currency exchange rates. However, our hedging

strategies may not be successful, and any of our unhedged foreign exchange exposures will continue to be subject to market fluctuations. These risks could
cause a material adverse effect on our business, financial position and results of operations and could cause the market value of our common stock to decline.

If we are unable to protect our intellectual property, we may not be able to compete effectively.

Where appropriate, we seek patent protection for certain aspects of our technology. Patent protection may not be available for some of the products

we are developing. If we must spend significant time and money protecting or enforcing our patents, designing around patents held by others or licensing,
potentially for large fees, patents or other proprietary rights held by others, our business and financial prospects may be harmed.

The patent positions of biopharmaceutical products are complex and uncertain. The scope and extent of patent protection for some of our products

and product candidates are particularly uncertain because key information on some of our product candidates has existed in the public domain for many years.
The composition and genetic sequences of animal and/or human versions of Aldurazyme, Naglazyme and many of our product candidates have been
published and are believed to be in the public domain. The chemical structure of 6R-BH4 (the active ingredient in Kuvan) has also been published. Publication
of this information may prevent us from obtaining or enforcing patents relating to our products and product candidates, including without limitation composition-
of-matter patents, which are generally believed to offer the strongest patent protection.

We own or have licensed patents and patent applications related to our products. However, these patents and patent applications do not ensure the

protection of our intellectual property for a number of reasons, including without limitation the following:

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With respect to pending patent applications, unless and until actually issued, the protective value of these applications is impossible to
determine. We do not know whether our patent applications will result in issued patents.

Patents have limited duration and expire. For example, certain of our patents related to Aldurazyme expired in November 2019 and the other
patents related to Aldurazyme expire in 2020.

Competitors may interfere with our patent process in a variety of ways. Competitors may claim that they invented the claimed invention prior
to us or that they filed their application for a patent on a claimed invention before we did. Competitors may also claim that we are infringing
on their patents and therefore we cannot practice our technology. Competitors may also contest our patents by showing the patent examiner
or a court that the invention was not original, was not novel or was obvious, for example. In litigation, a competitor could claim that our issued
patents are not valid or are unenforceable for a number of reasons. If a court agrees, we would not be able to enforce that patent.

Generic manufacturers may use litigation and regulatory means to obtain approval for generic versions of our products notwithstanding our
filed patents or patent applications.

Enforcing patents is expensive and may absorb significant time of our management. Management would spend less time and resources on
developing products, which could increase our operating expenses and delay product programs.

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Receipt of a patent may not provide much, if any, practical protection. For example, if we receive a patent with a narrow scope, then it will be
easier for competitors to design products that do not infringe on our patent.

The Leahy-Smith America Invents Act of 2011, which reformed certain patent laws in the U.S., may create additional uncertainty. Among the
significant changes are switching from a “first-to-invent” system to a “first-to-file” system, and the implementation of new procedures that
permit competitors to challenge our patents in the U.S. Patent and Trademark Office after grant.

It is also unclear whether our trade secrets are adequately protected. Our current and former employees, consultants or contractors may
unintentionally or willfully disclose trade secrets to competitors. Enforcing a claim that someone else illegally obtained and is using our trade secrets, as with
patent litigation, is expensive and time consuming, requires significant resources and has an unpredictable outcome. In addition, courts outside of the U.S. are
sometimes less willing to protect trade secrets. Furthermore, our competitors may independently develop equivalent knowledge, methods and know-how, in
which case we would not be able to enforce our trade secret rights against such competitors.

Under policies recently adopted in the EU, clinical trial data submitted to the EMA in MAAs that were traditionally regarded as confidential commercial
information are now subject to public disclosure. Subject to our ability to review and redact a narrow sub-set of confidential commercial information, the new EU
policies will result in the EMA’s public disclosure of certain of our clinical study reports, clinical trial data summaries and clinical overviews for recently
completed and future MAA submissions. The move toward public disclosure of development data could adversely affect our business in many ways, including,
for example, resulting in the disclosure of our confidential methodologies for development of our products, preventing us from obtaining intellectual property
right protection for innovations, requiring us to allocate significant resources to prevent other companies from violating our intellectual property rights, adding
even more complexity to processing health data from clinical trials consistent with applicable data privacy regulations, and enabling competitors to use our data
to gain approvals for their own products.

If we are unable to protect our intellectual property, third parties could develop competing products, which could adversely affect our revenue and

financial results generally.

Competitors and other third parties may have developed intellectual property that could limit our ability to market and commercialize our

products and product candidates, if approved.

Similar to us, competitors continually seek intellectual property protection for their technology. Several of our development programs, such as

valoctocogene roxaparvovec, focus on therapeutic areas that have been the subject of extensive research and development by third parties for many years.
Due to the amount of intellectual property in our field of technology, we cannot be certain that we do not infringe intellectual property rights of competitors or
that we will not infringe intellectual property rights of competitors granted or created in the future. For example, if a patent holder believes our product infringes
its patent, the patent holder may sue us even if we have received patent protection for our technology. If someone else claims we infringe its intellectual
property, we would face a number of issues, including the following:

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Defending a lawsuit takes significant executive resources and can be very expensive.

If a court decides that our product infringes a competitor’s intellectual property, we may have to pay substantial damages.

With respect to patents, in addition to requiring us to pay substantial damages, a court may prohibit us from making, selling, offering to sell,
importing or using our product unless the patent holder licenses the patent to us. The patent holder is not required to grant us a license. If a
license is available, it may not be available on commercially reasonable terms. For example, we may have to pay substantial royalties or
grant cross licenses to our patents and patent applications.

We may need to redesign our product so it does not infringe the intellectual property rights of others.

Redesigning our product so it does not infringe the intellectual property rights of competitors may not be possible or could require substantial
funds and time.

We may also support and collaborate in research conducted by government organizations, hospitals, universities or other educational institutions.

These research partners may be unwilling to grant us any exclusive rights to technology or products derived from these collaborations.

If we do not obtain required licenses or rights, we could encounter delays in our product development efforts while we attempt to design around other

patents or may be prohibited from making, using, importing, offering to sell or selling products requiring these licenses or rights. There is also a risk that
disputes may arise as to the rights to technology or products developed in collaboration with other parties. If we are not able to resolve such disputes and
obtain the licenses or rights we need, we may not be able to develop or market our products.

If our Manufacturing, Marketing and Sales Agreement with Genzyme were terminated, we could be prevented

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from continuing to commercialize Aldurazyme or our ability to successfully commercialize Aldurazyme would be delayed or diminished.

Either party may terminate the Manufacturing, Marketing and Sales Agreement (the MMS Agreement) between Genzyme and us related to
Aldurazyme for specified reasons, including if the other party is in material breach of the MMS Agreement, has experienced a change of control, as such term
is defined in the MMS Agreement, or has declared bankruptcy and also is in breach of the MMS Agreement. Although we are not currently in breach of the
MMS Agreement, there is a risk that either party could breach the MMS Agreement in the future. Either party may also terminate the MMS Agreement upon
one-year prior written notice for any reason.

If the MMS Agreement is terminated for breach, the breaching party will transfer its interest in the BioMarin/Genzyme LLC to the non-breaching party,

and the non-breaching party will pay a specified buyout amount for the breaching party’s interest in Aldurazyme and in the BioMarin/Genzyme LLC. If we are
the breaching party, we would lose our rights to Aldurazyme and the related intellectual property and regulatory approvals. If the MMS Agreement is terminated
without cause, the non-terminating party would have the option, exercisable for one year, to buy out the terminating party’s interest in Aldurazyme and in the
BioMarin/Genzyme LLC at a specified buyout amount. If such option is not exercised, all rights to Aldurazyme will be sold and the BioMarin/Genzyme LLC will
be dissolved. In the event of termination of the buyout option without exercise by the non-terminating party as described above, all right and title to Aldurazyme
is to be sold to the highest bidder, with the proceeds to be split between Genzyme and us in accordance with our percentage interest in the BioMarin/Genzyme
LLC.

If the MMS Agreement is terminated by either party because the other party declared bankruptcy, the terminating party would be obligated to buy out

the other party and would obtain all rights to Aldurazyme exclusively. If the MMS Agreement is terminated by a party because the other party experienced a
change of control, the terminating party shall notify the other party, the offeree, of its intent to buy out the offeree’s interest in Aldurazyme and the
BioMarin/Genzyme LLC for a stated amount set by the terminating party at its discretion. The offeree must then either accept this offer or agree to buy the
terminating party’s interest in Aldurazyme and the BioMarin/Genzyme LLC on those same terms. The party who buys out the other party would then have
exclusive worldwide rights to Aldurazyme. The Amended and Restated Collaboration Agreement between us and Genzyme will automatically terminate upon
the effective date of the termination of the MMS Agreement and may not be terminated independently from the MMS Agreement.

If we were obligated or given the option to buy out Genzyme’s interest in Aldurazyme and the BioMarin/Genzyme LLC, and thereby gain exclusive

rights to Aldurazyme, we may not have sufficient funds to do so and we may not be able to obtain the financing to do so. If we fail to buy out Genzyme’s
interest, we may be held in breach of the agreement and may lose any claim to the rights to Aldurazyme and the related intellectual property and regulatory
approvals. We would then effectively be prohibited from developing and commercializing Aldurazyme. If this happened, not only would our product revenues
decrease, but our share price would also decline.

If we fail to develop new products and product candidates or compete successfully with respect to acquisitions, joint ventures, licenses or

other collaboration opportunities, our ability to continue to expand our product pipeline and our growth and development would be impaired.

Our future growth and development depend in part on our ability to successfully develop new products from our research and development activities.

The development of biopharmaceutical products is very expensive and time intensive and involves a great degree of risk. The outcomes of research and
development programs, especially for innovative biopharmaceuticals, are inherently uncertain and may not result in the commercialization of any products.

Our competitors compete with us to attract organizations for acquisitions, joint ventures, licensing arrangements or other collaborations. To date,

several of our former and current product programs have been acquired through acquisitions and several of our former and current product programs have
been developed through licensing or collaborative arrangements, such as Aldurazyme, Kuvan and Naglazyme. These collaborations include licensing
proprietary technology from, and other relationships with, academic research institutions. Our future success will depend, in part, on our ability to identify
additional opportunities and to successfully enter into partnering or acquisition agreements for those opportunities. If our competitors successfully enter into
partnering arrangements or license agreements with academic research institutions, we will then be precluded from pursuing those specific opportunities.
Because each of these opportunities is unique, we may not be able to find a substitute. Several pharmaceutical and biotechnology companies have already
established themselves in the field of genetic diseases. These companies have already begun many drug development programs, some of which may target
diseases that we are also targeting, and have already entered into partnering and licensing arrangements with academic research institutions, reducing the
pool of available opportunities.

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Universities and public and private research institutions also compete with us. While these organizations primarily have educational or basic research

objectives, they may develop proprietary technology and acquire patents that we may need for the development of our product candidates. We will attempt to
license this proprietary technology, if available. These licenses may not be available to us on acceptable terms, if at all. If we are unable to compete
successfully with respect to acquisitions, joint venture and other collaboration opportunities, we may be limited in our ability to develop new products and to
continue to expand our product pipeline.

The sale of generic versions of Kuvan by generic manufacturers may adversely affect our revenue and results of operations.

The Drug Price Competition and Patent Term Restoration Act of 1984, known as the Hatch-Waxman Act, permits the FDA to approve abbreviated new

drug applications (ANDAs) for generic versions of branded drugs. We refer to this process as the ANDA process. The ANDA process permits competitor
companies to obtain marketing approval for a drug with the same active ingredient as a branded drug, but does not generally require the conduct and
submission of clinical efficacy studies for the generic product. In place of such clinical studies, an ANDA applicant usually needs only to submit data
demonstrating that its product is bioequivalent to the branded product.

Pursuant to the Hatch-Waxman Act, companies were permitted to file ANDA applications for proposed generic versions of Kuvan at any time after
December 2011. We own several patents that cover Kuvan, and we have listed those patents in conjunction with that product in the FDA’s Approved Drug
Products with Therapeutic Equivalence Evaluations (the Orange Book). The Hatch-Waxman Act requires an ANDA applicant seeking FDA approval of its
proposed generic product prior to the expiration of our Orange Book-listed patents to certify that the applicant believes that our patents are invalid or will not be
infringed by the manufacture, use or sale of the drug for which the application has been submitted (a paragraph IV certification) and notify us of such
certification (a paragraph IV notice). Upon receipt of a paragraph IV notice, the Hatch-Waxman Act allows us, with proper basis, to bring an action for patent
infringement against the ANDA filer, asking that the proposed generic product not be approved until after our patents expire. If we commence a lawsuit within
45 days from receipt of the paragraph IV notice, the Hatch-Waxman Act provides a 30-month stay, during which time the FDA cannot finally approve the
generic’s application. If the litigation is resolved in favor of the ANDA applicant during the 30-month stay period, the stay is lifted and the FDA may approve the
ANDA if it is otherwise ready for approval. The discovery, trial and appeals process in such a lawsuit is costly, time consuming, and may result in generic
competition if the ANDA applicant prevails.

Between 2014 and 2016 we received paragraph IV notice letters from two pharmaceutical companies notifying us that each had filed ANDAs seeking

approval of proposed generic versions of Kuvan. We filed lawsuits alleging patent infringement against each company, and between 2015 and 2017 we entered
into settlement agreements with the companies that resolved the patent litigation in the U.S. The settlement agreements granted the companies non-exclusive
licenses to our Kuvan-related patents to allow them to market generic versions of sapropterin dihydrochloride in the U.S. for the indications approved for Kuvan
beginning on October 1, 2020, or earlier under certain circumstances. We expect generic versions of Kuvan to first become available in the U.S. in the fourth
quarter of 2020.

Any future ANDA or related legal proceeding could have an adverse impact on our stock price, and litigation to enforce our patents has, and is likely to

continue to, cost a substantial amount and require significant management attention. If the patents covering Kuvan and its use are not upheld in litigation, or if
any ANDA filer we bring suit against is found to not infringe our asserted patents, the resulting generic competition following the expiration of regulatory
exclusivity would have a material adverse effect on our revenue and results of operations. Moreover, generic competition following the settlements described
above could have a material adverse effect on our revenue and results of operations.

We also face potential generic competition for Kuvan in certain foreign countries, and there is a process equivalent to the ANDA process under Article

10 of Directive 2001/83/EC in the EU. Our ability to successfully market and sell Kuvan in many countries in which we operate is based upon patent rights or
certain regulatory forms of exclusivity, or both. The scope of our patent rights and regulatory exclusivity for Kuvan vary from country to country and are
dependent on the availability of meaningful legal remedies in each country. If our patent rights and regulatory exclusivity for Kuvan are successfully challenged,
expire, or otherwise terminate in a particular country, the resulting generic competition could have a material adverse effect on our revenue and results of
operations.

If we do not achieve our projected development goals in the timeframes we announce and expect, the commercialization of our product

candidates may be delayed and the credibility of our management may be adversely affected and, as a result, our stock price may decline.

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For planning purposes, we estimate the timing of the accomplishment of various scientific, clinical, regulatory and other product development goals,

which we sometimes refer to as milestones. These milestones may include the commencement or completion of scientific studies and clinical trials and the
submission of regulatory filings. From time to time, we publicly announce the expected timing of some of these milestones. All of these milestones are based
on a variety of assumptions. The actual timing of these milestones can vary dramatically compared to our estimates, in many cases for reasons beyond our
control. If we do not meet these milestones as publicly announced, the commercialization of our products may be delayed and the credibility of our
management may be adversely affected and, as a result, our stock price may decline.

We depend upon our key personnel and our ability to attract and retain employees.

Our future growth and success will depend in large part on our continued ability to attract, retain, manage and motivate our employees. The loss of the

services of any member of our senior management or the inability to hire or retain experienced management personnel could adversely affect our ability to
execute our business plan and harm our operating results.

Because of the specialized scientific and managerial nature of our business, we rely heavily on our ability to attract and retain qualified scientific,

technical and managerial personnel. In particular, the loss of one or more of our senior executive officers could be detrimental to us if we do not have an
adequate succession plan or if we cannot recruit suitable replacements in a timely manner. While our senior executive officers are parties to employment
agreements with us, these agreements do not guarantee that they will remain employed with us in the future. In addition, in many cases, these agreements do
not restrict our senior executive officers’ ability to compete with us after their employment is terminated. The competition for qualified personnel in the
pharmaceutical field is intense, and there is a limited pool of qualified potential employees to recruit. Due to this intense competition, we may be unable to
continue to attract and retain qualified personnel necessary for the development of our business or to recruit suitable replacement personnel. If we are
unsuccessful in our recruitment and retention efforts, our business may be harmed.

Our success depends on our ability to manage our growth.

Product candidates that we are currently developing or may license or acquire in the future may be intended for patient populations that are
significantly larger than any of the patient populations we currently target. In order to continue development and marketing of these products, if approved, we
will need to significantly expand our operations. To manage expansion effectively, we need to continue to develop and improve our research and development
capabilities, manufacturing and quality capacities, sales and marketing capabilities, financial and administrative systems and standard processes for global
operations. Our staff, financial resources, systems, procedures or controls may be inadequate to support our operations and may increase our exposure to
regulatory and corruption risks and our management may be unable to manage successfully future market opportunities or our relationships with customers
and other third parties.

Changes in methods of treatment of disease could reduce demand for our products and adversely affect revenues.

Even if our product candidates are approved, if doctors elect a course of treatment which does not include our products, this decision would reduce

demand for our products and adversely affect revenues. For example, if gene therapy becomes widely used as a treatment of genetic diseases, the use of
enzyme replacement therapy, such as Aldurazyme, Naglazyme, and Vimizim in MPS diseases, could be greatly reduced. Moreover, if we obtain regulatory
approval for valoctocogene roxaparvovec, the commercial success of valoctocogene roxaparvovec will still depend, in part, on the acceptance of physicians,
patients and healthcare payers of gene therapy products in general, and our product candidate in particular, as medically necessary, cost effective and safe.
Changes in treatment method can be caused by the introduction of other companies’ products or the development of new technologies or surgical procedures
which may not directly compete with ours, but which have the effect of changing how doctors decide to treat a disease.

If product liability lawsuits are successfully brought against us, we may incur substantial liabilities.

We are exposed to the potential product liability risks inherent in the testing, manufacturing and marketing of human pharmaceuticals. We currently

maintain insurance against product liability lawsuits for the commercial sale of our products and for the clinical trials of our product candidates. Pharmaceutical
companies must balance the cost of insurance with the level of coverage based on estimates of potential liability. Historically, the potential liability associated
with product liability lawsuits for pharmaceutical products has been unpredictable. Although we believe that our current insurance is a reasonable estimate of
our potential liability and represents a commercially reasonable balancing of the level of coverage as compared to the cost of the insurance, we may be subject
to claims in connection with our clinical trials and commercial use of our products and product candidates for which our insurance coverage may not be
adequate and we may be unable to avoid significant liability if any product liability lawsuit is brought against us. If we are the subject of a successful product
liability claim that exceeds the limits of any insurance coverage we obtain, we may incur substantial charges that would adversely affect our earnings and
require the commitment of capital resources that might otherwise be available for the development and commercialization of our product programs.

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We rely significantly on information technology systems and any failure, inadequacy, interruption or security lapse of that technology,

including any cybersecurity incidents, could harm our ability to operate our business effectively and have a material adverse effect on our
business, reputation, financial condition, and results of operations.

We rely significantly on our information technology systems to effectively manage and maintain our operations, inventory and internal reports, to

manufacture and ship products to customers and to timely invoice them. Any failure, inadequacy or interruption of that infrastructure or security lapse of that
technology, including cybersecurity incidents or attacks, could harm our ability to operate our business effectively. Our ability to manage and maintain our
operations, inventory and internal reports, to manufacture and ship our products to customers and timely invoice them depends significantly on our enterprise
resource planning, production management and other information systems. Cybersecurity incidents resulting in the failure of our enterprise resource planning
system, production management or other systems to operate effectively or to integrate with other systems, or a breach in security or other unauthorized access
of these systems, may affect our ability to manage and maintain our operations, inventory and internal reports, and result in delays in product fulfillment and
reduced efficiency of our operations.

As part of our business, we collect, store and transmit large amounts of confidential information, proprietary data, intellectual property and personal

data. The information and data processed and stored in our technology systems, and those of our research collaborators, CROs, contract manufacturers,
suppliers, distributors, or other third parties for which we depend to operate our business, may be vulnerable to loss, damage, denial-of-service, unauthorized
access or misappropriation. Such cybersecurity breaches may be the result of unauthorized activity by our employees or contractors or malware, hacking,
business email compromise, phishing or other cyberattacks directed by third parties. While we have implemented measures to protect our information and
data, our efforts may not be successful.

We have experienced and may continue to experience cybersecurity incidents. Although to our knowledge we have not experienced any material

incident or interruption to date, if such an event were to occur it could result in a material disruption of our development programs and commercial operations,
including due to a loss, corruption or unauthorized disclosure of our trade secrets, personal data or other proprietary or sensitive information. Moreover, the
costs to us to investigate and mitigate cybersecurity incidents could be significant. For example, the loss of clinical trial data could result in delays in our
product development or regulatory approval efforts and significantly increase our costs to recover or reproduce the data. Any security breach that results in the
unauthorized access, use or disclosure of personal data may require us to notify individuals, governmental authorities, credit reporting agencies, or other
parties pursuant to privacy and security laws and regulations or other obligations. Such a security compromise could harm our reputation, erode confidence in
our information security measures, and lead to regulatory scrutiny. To the extent that any disruption or security breach resulted in a loss of, or damage to, our
data or systems, or inappropriate disclosure of confidential, proprietary or personal information, we could be exposed to a risk of loss, enforcement measures,
penalties, fines, indemnification claims, litigation and potential civil or criminal liability, which could materially adversely affect our business, financial condition
and results of operations.

If a natural disaster, terrorist or criminal activity or other unforeseen event caused significant damage to our facilities or those of our third-

party manufacturers and suppliers or significantly disrupted our operations or those of our third-party manufacturers and suppliers, we may be
unable to meet demand for our products and lose potential revenue, have reduced margins, or be forced to terminate a program.

The occurrence of an earthquake or other catastrophic disaster could cause damage to our facility and equipment, or that of our third-party

manufacturers or single-source suppliers, which could materially impair the ability for us or our third-party manufacturers to manufacture our products and
product candidates. Our Galli Drive facility, located in Novato, California, is currently our only manufacturing facility for Aldurazyme, Naglazyme and Palynziq
and is one of two manufacturing facilities for Brineura and Vimizim. Our gene therapy manufacturing facility is also located in Novato, California, and it is
currently our only manufacturing facility to support valoctocogene roxaparvovec clinical development activities and the anticipated commercial demand for
valoctocogene roxaparvovec, if approved. These facilities are located in the San Francisco Bay Area near known earthquake fault zones and are vulnerable to
significant damage from earthquakes. We, the third-party manufacturers with whom we contract and our single-source suppliers of raw materials, which include
many of our critical raw materials, are also vulnerable to damage from other types of disasters, including fires, explosions, floods, and similar events. If any
disaster were to occur, or any terrorist or criminal activity caused significant damage to our facilities or the facilities of our third-party manufacturers and
suppliers, our ability to manufacture our products, or to have our products manufactured, could be seriously, or potentially completely, impaired, and our
commercialization efforts and revenue could be seriously impaired.

Moreover, other unforeseen events, such as power outages, could significantly disrupt our operations or those of our third-party manufacturers and
suppliers, which could result in significant delays in the manufacture of our products and adversely impact our commercial operations and revenues. Pacific
Gas and Electric Company, the electric utility in the San Francisco Bay Area where many of our facilities are located, commenced widespread blackouts during
the fall of 2019 to avoid and contain wildfires sparked during strong wind events by downed power lines or equipment failures. While we have not experienced
damage to our facilities or material disruption to our operations as a result of these power outages, ongoing blackouts, particularly if prolonged or frequent,
could impact our business going forward. The insurance that we carry, the inventory that we maintain and our risk mitigation plans may not be adequate to
cover our losses resulting from disasters or other business interruptions.

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Changes in tax laws or regulations that are applied adversely to us or our customers may have a material adverse effect on our business

and financial condition.

Legislation enacted on December 22, 2017, known as the Tax Cuts & Jobs Act or TCJA, significantly revises the Internal Revenue Code of 1986, as
amended. The TCJA, among other things, contains significant changes to corporate taxation, including reduction of the corporate tax rate from a top marginal
rate of 35% to a flat rate of 21%, limitation of the deduction for net operating losses to 80% of current year taxable income and elimination of net operating loss
carrybacks, one time taxation of offshore earnings at reduced rates regardless of whether they are repatriated, elimination of U.S. tax on foreign earnings
(subject to certain important exceptions), immediate deductions for certain new investments instead of deductions for depreciation expense over time, creation
of a base erosion and anti-abuse tax and modification or repeal of many business deductions and credits (including reduction of tax credits under the Orphan
Drug Act). Many aspects of the TCJA are unclear and may not be clarified for some time. Future guidance from the Internal Revenue Service and other tax
authorities with respect to the TCJA may affect us, and certain aspects of the TCJA could be repealed or modified in future legislation. Notwithstanding the
reduction in the corporate income tax rate, it is possible that the TCJA, or regulations or interpretations under it, or any other future changes in tax laws, could
adversely affect our business and financial condition, and such effect could be material.

Moreover, changes in the tax laws of foreign jurisdictions could arise as a result of the base erosion and profit shifting (BEPS) project that was

undertaken by the Organization for Economic Co-operation and Development (OECD). The OECD, which represents a coalition of member countries,
recommended changes to numerous long-standing tax principles related to transfer pricing. These changes, as adopted by countries, may increase tax
uncertainty and may adversely affect our provision for income taxes, results of operations and cash flows. It is not uncommon for taxing authorities in different
countries to have conflicting views, for instance, with respect to, among other things, the manner in which the arm's length standard is applied for transfer
pricing purposes, or with respect to the valuation of intellectual property. If tax authorities successfully challenge our transfer prices as not reflecting arm's
length transactions, they could require us to adjust our transfer prices and thereby reallocate our income to reflect these revised transfer prices, resulting in a
higher tax liability. In addition, if a country from which income is reallocated does not agree with the reallocation, both that country and the other country to
which the income was allocated could tax the same income, potentially resulting in double taxation. If tax authorities were to allocate income to a higher tax
jurisdiction, subject our income to double taxation or assess interest and penalties, it would increase our consolidated tax liability, which could adversely affect
our business, financial condition, results of operations and cash flows.

Our business is affected by macroeconomic conditions.

Various macroeconomic factors could adversely affect our business and the results of our operations and financial condition, including changes in

inflation, interest rates and foreign currency exchange rates and overall economic conditions and uncertainties, including those resulting from the current and
future conditions in the global financial markets. For instance, if inflation or other factors were to significantly increase our business costs, it may not be feasible
to pass price increases on to our customers due to the process by which healthcare providers are reimbursed for our products by the government. Interest
rates, the liquidity of the credit markets and the volatility of the capital markets could also affect the value of our investments and our ability to liquidate our
investments in order to fund our operations. We purchase or enter into a variety of financial instruments and transactions, including investments in commercial
paper, the extension of credit to corporations, institutions and governments and hedging contracts. If any of the issuers or counter parties to these instruments
were to default on their obligations, it could materially reduce the value of the transaction and adversely affect our cash flows.

We sell our products in countries that face economic volatility and weakness. Although we have historically collected receivables from customers in
those countries, sustained weakness or further deterioration of the local economies and currencies may cause customers in those countries to be unable to
pay for our products. Additionally, if one or more of these countries were unable to purchase our products, our revenue would be adversely affected.

Interest rates and the ability to access credit markets could also adversely affect the ability of our customers/distributors to purchase, pay for and

effectively distribute our products. Similarly, these macroeconomic factors could affect the ability of our contract manufacturers, sole-source or single-source
suppliers to remain in business or otherwise manufacture or supply product. Failure by any of them to remain a going concern could affect our ability to
manufacture products.

Our stock price may be volatile, and an investment in our stock could suffer a decline in value.

Risks Related to Ownership of Our Securities

Our valuation and stock price have no meaningful relationship to current or historical earnings, asset values, book value or many other criteria based

on conventional measures of stock value. The market price of our common stock will fluctuate due to factors including:

•

•

product sales and profitability of our products;

manufacturing, supply or distribution of our product candidates and commercial products;

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•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

progress of our product candidates through the regulatory process and our ability to successfully commercialize any such products that
receive regulatory approval;

results of clinical trials, announcements of technological innovations or new products by us or our competitors;

generic competition to Kuvan tablets and powder relating to our settlements with the two pharmaceutical companies described above in this
Risk Factors section or potential generic competition from future competitors;

government regulatory action affecting our product candidates, our products or our competitors’ product candidates and products in both the
U.S. and non-U.S. countries;

developments or disputes concerning patent or proprietary rights;

general market conditions and fluctuations for the emerging growth and pharmaceutical market sectors;

economic conditions in the U.S. or abroad;

negative publicity about us or the pharmaceutical industry;

changes in the structure of healthcare payment systems;

cybersecurity incidents experienced by us or others in our industry;

broad market fluctuations in the U.S., the EU or in other parts of the world;

actual or anticipated fluctuations in our operating results, including due to timing of large orders for our products, in particular in Latin
America, where governments place large periodic orders for Naglazyme and Vimizim;

changes in company assessments or financial estimates by securities analysts;

acquisitions of products, businesses, or other assets; and

sales of our shares of stock by us, our significant stockholders, or members of our management or Board of Directors.

In the past, following periods of large price declines in the public market price of a company’s securities, securities class action litigation has often

been initiated against that company. Litigation of this type could result in substantial costs and diversion of management’s attention and resources, which would
hurt our business. Any adverse determination in litigation could also subject us to significant liabilities. In addition, our stock price can be materially adversely
affected by factors beyond our control, such as disruptions in global financial markets or negative trends in the biotechnology sector of the economy, even if our
business is operating well.

Conversion of the Notes will dilute the ownership interest of existing stockholders, including holders who had previously converted their

Notes, or may otherwise depress the price of our common stock.

The conversion of some or all of the Notes will dilute the ownership interests of existing stockholders to the extent we deliver shares upon conversion

of any of the Notes. The Notes may in the future become convertible at the option of their holders prior to their scheduled terms under certain circumstances.
Any sales in the public market of the common stock issuable upon such conversion could adversely affect prevailing market prices of our common stock. In
addition, the existence of the Notes may encourage short selling by market participants because the conversion of the Notes could be used to satisfy short
positions, or anticipated conversion of the Notes into shares of our common stock could depress the price of our common stock.

The capped call transactions may affect the value of the Notes and our common stock.

In connection with the issuance of the 2020 Notes, we entered into capped call transactions with respect to 50% of the principal amount of the 2020

Notes with certain hedge counterparties. The capped call transactions will cover, subject to customary anti-dilution adjustments, the aggregate number of
shares of common stock underlying 50% of the principal amount of the 2020 Notes and are expected generally to reduce potential dilution to the common stock
upon conversion of the 2020 Notes in excess of the principal amount of such converted 2020 Notes. In connection with establishing their initial hedges of the
capped call transactions, the hedge counterparties (or their affiliates) entered into various derivative transactions with respect to the common stock
concurrently with, and/or purchased the common stock shortly after, the pricing of the 2020 Notes. The hedge counterparties (or their affiliates) are likely to
modify their hedge positions by entering into or unwinding various derivative transactions with respect to the common stock and/or by purchasing or selling the
common stock or other securities of ours in secondary market transactions prior to the maturity of the 2020 Notes (and are likely to do so during the settlement
averaging period under the capped call transactions, which precedes the maturity date of the 2020 Notes, and on or around any earlier conversion date related
to a conversion of the 2020 Notes).

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The effect, if any, of any of these transactions and activities on the market price of our common stock or the 2020 Notes will depend in part on market
conditions and cannot be ascertained at this time, but any of these activities could adversely affect the value of our common stock, which could affect the value
of the 2020 Notes and the value of our common stock, if any, that 2020 Note holders receive upon any conversion of the 2020 Notes.

Anti-takeover provisions in our charter documents and under Delaware law may make an acquisition of us, which may be beneficial to our

stockholders, more difficult.

We are incorporated in Delaware. Certain anti-takeover provisions of Delaware law and our charter documents as currently in effect may make a

change in control of us more difficult, even if a change in control would be beneficial to the stockholders. Our anti-takeover provisions include provisions in our
restated certificate of incorporation and amended and restated bylaws providing that stockholders’ meetings may only be called by our Chairman, the lead
independent director or the majority of our Board of Directors and that the stockholders may not take action by written consent and requiring that stockholders
that desire to nominate any person for election to our Board of Directors or to make any proposal with respect to business to be conducted at a meeting of our
stockholders be submitted in appropriate form to our Secretary within a specified period of time in advance of any such meeting. Additionally, our Board of
Directors has the authority to issue shares of preferred stock and to determine the terms of those shares of stock without any further action by our
stockholders. The rights of holders of our common stock are subject to the rights of the holders of any preferred stock that may be issued. The issuance of
preferred stock could make it more difficult for a third party to acquire a majority of our outstanding voting stock. Delaware law also prohibits corporations from
engaging in a business combination with any holders of 15% or more of their capital stock until the holder has held the stock for three years unless, among
other possibilities, our Board of Directors approves the transaction. Our Board of Directors may use these provisions to prevent changes in the management
and control of us. Also, under applicable Delaware law, our Board of Directors may adopt additional anti-takeover measures in the future.

The fundamental change repurchase feature of the Notes may delay or prevent an otherwise beneficial attempt to take us over.

The terms of the Notes require us to repurchase the Notes in the event of a fundamental change. A takeover of us would trigger options by the

respective holders of the applicable Notes to require us to repurchase such Notes. This may have the effect of delaying or preventing a takeover of us that
would otherwise be beneficial to our stockholders or investors in the Notes.

Our amended and restated bylaws provide that the Court of Chancery of the State of Delaware will be the exclusive forum for the

adjudication of certain disputes, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors,
officers, or employees.

Our amended and restated bylaws provide that the Court of Chancery of the State of Delaware is the sole and exclusive forum for:

•

•

•

•

any derivative action or proceeding brought on our behalf;

any action asserting a claim of breach of a fiduciary duty owed by any director, officer or other employee of BioMarin to us or our
stockholders;

any action asserting a claim against us or any of our directors, officers or other employees arising pursuant to any provision of the General
Corporation Law of the State of Delaware, our restated certificate of incorporation or our amended and restated bylaws; and

any action asserting a claim against us or any of our directors, officers or other employees that is governed by the internal affairs doctrine.

This exclusive-forum provision would not apply to suits brought to enforce a duty or liability created by the Securities Act of 1933, as amended, the

Exchange Act or any other claim for which the U.S. federal courts have exclusive jurisdiction, and further provides that any person or entity that acquires any
interest in shares of our capital stock will be deemed to have notice of and consented to the provisions of such provision, including consent to the personal
jurisdiction of the Court of Chancery of the State of Delaware related to any action covered by such provision.

This exclusive-forum provision may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our

directors, officers, or other employees, which may discourage lawsuits against us and our directors, officers, and other employees. If a court were to find this
exclusive-forum provision to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving the dispute in other
jurisdictions, which could seriously harm our business.

Item 1B. Unresolved Staff Comments

None.

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Item 2. Properties

The following table contains information about our significant owned and leased properties as of December 31, 2019:

Location

Approximate
Square Feet

Use

San Rafael facility, San Rafael, California

407,300    Corporate headquarters, laboratory and office

Several facilities in Novato, California
Several leased facilities in Novato, California

Clinical and commercial manufacturing, laboratory and
office

293,300   
203,700    Office and warehouse

Shanbally facility, Cork, Ireland

203,500    Manufacturing, laboratory and office

Lease
Expiration
Date

Owned 
property

Owned 
property
2023-2026

Owned 
property

We expect that these properties, together with our other smaller leased office facilities in various countries, will be adequate for our operations for the

foreseeable future.

Item 3. Legal Proceedings

None.

Item 4. Mine Safety Disclosures

Not applicable.

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Part II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Our common stock is listed under the symbol “BMRN” on the Nasdaq Global Select Market.

We have never paid any cash dividends on our common stock and we do not anticipate paying cash dividends in the foreseeable future.

Recent Sales of Unregistered Securities

We did not sell any unregistered securities during the year ended December 31, 2019.

Issuer Purchases of Equity Securities

We did not make any purchases of our common stock during the year ended December 31, 2019.

Holders

As of February 12, 2020, there were 44 holders of record of 179,925,602 outstanding shares of our common stock.

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Performance Graph

The following is not deemed “filed” with the Securities and Exchange Commission and is not to be incorporated by reference into any filing we make

under the Securities Act of 1933, as amended, whether made before or after the date hereof and irrespective of any general incorporation by reference
language in such filing.

The following graph shows the value of an investment in BioMarin common stock, the Nasdaq Composite Index and the Nasdaq Biotechnology Index,
assuming the investment of $100.00 at the beginning of the period and the reinvestment of dividends, if any. Our common stock is traded on the Nasdaq Global
Select Market and is a component of both the Nasdaq Composite Index and the Nasdaq Biotechnology Index. The comparisons shown in the graph are based
upon historical data and we caution that the stock price performance shown in the graph is not indicative of, nor intended to forecast, the potential future
performance of our stock.

* $100 invested on December 31, 2014 in stock or index, including reinvestment of dividends.

2014

2015

2016

2017

2018

2019

Fiscal Year Ending December 31,

BioMarin Pharmaceutical Inc.
Nasdaq Composite

Nasdaq Biotechnology

$
$

$

100.00    $
100.00    $

115.88    $
106.96    $

91.64    $
116.45    $

98.64    $
150.96    $

94.19    $
146.67    $

100.00    $

111.77    $

87.91    $

106.92    $

97.45    $

93.53   
200.49   

121.92   

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Item 6. Selected Consolidated Financial Data

We derived the selected consolidated statements of operations data for the years ended December 31, 2019, 2018 and 2017 and the selected

consolidated balance sheet data as of December 31, 2019 and 2018 from the audited Consolidated Financial Statements appearing elsewhere in this Annual
Report on Form 10-K. We derived the selected consolidated statements of operations data for the years ended December 31, 2016 and 2015 and the selected
consolidated balance sheet data as of December 31, 2017, 2016 and 2015 from audited Consolidated Financial Statements not included in this Annual Report
on Form 10-K. The information set forth below is not necessarily indicative of results of future operations, and should be read in conjunction with Part II, Item 7,
“Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and the Consolidated Financial Statements and related notes
thereto included in Item 15 of this Annual Report on Form 10-K to fully understand factors that may affect the comparability of the information presented below:

Consolidated Statements of Operations data:

Total revenues (2)

Total costs and expenses

Loss from operations
Provision for (benefit from) income
taxes

Net loss

Net loss per share, basic

Net loss per share, diluted

Weighted average common shares 
outstanding, basic
Weighted average common shares 
outstanding, diluted

Years Ended December 31,
(In millions, except for per share data)

2019 (1)

2018 (1)

2017 (1)

2016

2015

$

$

$

$

$

$

$

1,704.0    $

1,491.2    $

1,313.6    $

1,116.9    $

889.9   

1,804.5    $

1,614.7    $

1,328.3    $

1,920.3    $

1,000.6   

(100.5)   $

(123.5)   $

(14.7)   $

(803.4)   $

(110.7)  

(71.0)   $

(23.8)   $

(0.13)   $

(0.13)   $

(65.5)   $

(77.2)   $

(0.44)   $

(0.44)   $

81.2    $

(117.0)   $

(0.67)   $

(0.67)   $

(200.8)   $

(630.2)   $

(3.80)   $

(3.81)   $

17.1   

(171.8)  

(1.07)  

(1.07)  

179.0   

177.1   

174.4   

166.0   

160.0   

179.0   

177.3   

174.4   

166.2   

160.0   

Consolidated Balance Sheets data:

Cash, cash equivalents and investments
Total assets (2)
Convertible senior notes, net
Other long-term obligations (2)
Total stockholders' equity

2019 (1)

2018 (1)

2017

2016

2015

December 31,
(In millions)

$
$

$

$

$

1,165.8    $
4,690.0    $

848.1    $

148.9    $

1,320.2    $
4,427.1    $

830.4    $

105.5    $

1,781.7    $
4,633.1    $

1,174.5    $

194.4    $

1,362.4    $
4,023.7    $

683.2    $

157.3    $

1,018.3   
3,729.4   

662.3   

220.8   

3,122.4    $

2,967.9    $

2,808.7    $

2,766.3    $

2,400.8   

(1)

(2)

Refer to “Management's Discussion and Analysis of Financial Condition and Results of Operations — Results of Operations” in Part II, Item 7 of this
Annual Report on Form 10-K for additional discussion of our operating results and changes in our financial position.

Refer to the Consolidated Financial Statements and related notes thereto included in Item 15 of this Annual Report on Form 10-K for additional
discussion of the impact of adoption of new accounting pronouncements.

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Table of Contents

Quarterly Financial Data (unaudited)

You should read the following tables presenting our unaudited quarterly results of operations in conjunction with the Consolidated Financial

Statements and related notes contained elsewhere in this Annual Report on Form 10-K. We have prepared this unaudited information on the same basis as our
audited Consolidated Financial Statements. Our quarterly operating results have fluctuated in the past and may continue to do so in the future as a result of a
number of factors, including, but not limited to, the timing and nature of research and development activities.

2019:

Total revenues

Net income (loss)

Net income (loss) per share, basic
Net income (loss) per share, diluted

2018:

Total revenues
Net loss

Net loss per share, basic

Net loss per share, diluted

Three Months Ended
(In millions, except per share data, unaudited)

March 31,

June 30,

September 30,

December 31,

$

$

$
$

$
$

$

$

400.7    $

(56.5)   $

(0.32)   $
(0.32)   $

373.4    $
(44.1)   $

(0.25)   $

(0.26)   $

387.8    $

(37.4)   $

(0.21)   $
(0.21)   $

372.8    $
(16.8)   $

(0.09)   $

(0.09)   $

461.1    $

55.0    $

0.31    $
0.30    $

391.7    $
(12.6)   $

(0.07)   $

(0.07)   $

454.4   

15.0   

0.08   
0.08   

353.2   
(3.7)  

(0.02)  

(0.03)  

Refer to “Management's Discussion and Analysis of Financial Condition and Results of Operations - Results of Operations” in Part II, Item 7 of this

Annual Report on Form 10-K for discussion of our operating results.

54

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations (MD&A) is intended to help the reader

understand our results of operations and financial condition. MD&A is provided as a supplement to, and should be read in conjunction with, our audited
Consolidated Financial Statements and the accompanying notes to the Consolidated Financial Statements and other disclosures included in this Annual Report
on Form 10-K, including the disclosures under “Risk Factors” in Part I, Item 1A of this Annual Report on Form 10-K. These risks and uncertainties could cause
actual results to differ significantly from those projected in forward-looking statements contained in this report or implied by past results and trends. Forward-
looking statements are statements that attempt to forecast or anticipate future developments in our business, financial condition or results of operations. See
the section titled “Forward-Looking Statements” that appears at the beginning of this Annual Report on Form 10-K. These statements, like all statements in this
report, speak only as of the date of this Annual Report on Form 10-K (unless another date is indicated), and, except as required by law, we undertake no
obligation to update or revise these statements in light of future developments. Our Consolidated Financial Statements have been prepared in accordance with
United States (U.S.) generally accepted accounting principles (GAAP) and are presented in U.S. Dollars (USD).

Overview

We are a global biotechnology company that develops and commercializes innovative therapies for people with serious and life-threatening rare

diseases and medical conditions. We select product candidates for diseases and conditions that represent a significant unmet medical need, have well-
understood biology and provide an opportunity to be first-to-market or offer a significant benefit over existing products.

Our portfolio consists of several commercial therapies and multiple clinical and preclinical product candidates. A summary of our major commercial

products, including key metrics, as of December 31, 2019, is provided below:

Major Commercial Products

Aldurazyme (laronidase)
Brineura (cerliponase alfa)

Kuvan (sapropterin dihydrochloride)

Naglazyme (galsulfase)
Palynziq (pegvaliase-pqpz)

Vimizim (elosulfase alpha)

Indication

MPS I (3)
CLN2 (4)
PKU (5)
MPS VI (7)
PKU (8)
MPS IVA (9)

United States
Orphan
Drug
Exclusivity
Expiration (1)
Expired
2024

Expired

Expired
2025

2021

United
States
Biologic
Exclusivity
Expiration (2)
Expired
2029

Not Applicable

Expired
2030

2026

European
Union
Orphan Drug
Exclusivity
Expiration (1)
Expired
2027
2020 (6)

Expired
2029

2024

(1)
(2)
(3)
(4)
(5)
(6)

(7)
(8)
(9)

See “Government Regulation—Orphan Drug Designation” in Part I, Item 1 of this Annual Report on form 10-K for further discussion
See “Government Regulation— Healthcare Reform” in Part I, Item 1 of this Annual Report on form 10-K for further discussion
For the treatment of Mucopolysaccharidosis I (MPS I)
For the treatment of late infantile neuronal ceroid lipofuscinosis type 2 (CLN2)
For the treatment of phenylketonuria (PKU)
Kuvan, a small molecule therapy, has been granted orphan drug status in the European Union (EU), which together with pediatric exclusivity, confers
12 years of market exclusivity in the EU that expires in December 2020
For the treatment of Mucopolysaccharidosis VI (MPS VI)
For adult patients with PKU
For the treatment of Mucopolysaccharidosis IV Type A (MPS IVA)

A summary of our on-going major development programs, including key metrics as of December 31, 2019, is provided below:

Major Product Candidates
in Development

Valoctocogene roxaparvovec

Vosoritide

BMN 307

Target
Indication
Severe Hemophilia A

 Achondroplasia

PKU

U.S. Orphan
Designation
 Yes

EU Orphan
Designation
 Yes

 Yes

Yes

 Yes

Yes

Stage

 Clinical Phase 3

 Clinical Phase 3
Clinical Phase 1/2 (1)

(1)

We expect to start dosing patients in a Phase 1/2 study in the first quarter of 2020. See "Major Product Candidates - BMN 307" in Part I, Item 1 of this
Annual Report on form 10-K for further discussion.

55

Table of Contents

Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

Business Developments

We continued to grow our commercial business and advance our product candidate pipeline during 2019. We believe that the combination of our

internal research programs, acquisitions and partnerships will allow us to continue to develop and commercialize innovative therapies for people with serious
and life-threatening rare diseases and medical conditions. Below is a summary of key business developments from 2019:

Product Approval

•

Palynziq - In May 2019, the European Commission granted marketing authorization for Palynziq at doses of up to 60 mg once daily, to reduce blood
Phe concentrations in patients with PKU aged 16 and older, who have inadequate blood Phe control (blood Phe levels greater than 600 micromol/L)
despite prior management with available treatment options. EU commercial sales commenced in the third quarter of 2019 and we anticipate
meaningful revenue contributions from this region in 2020.

Continued Emphasis on Research and Development

•

•

•

•

Valoctocogene roxaparvovec – In February 2020, we announced that the U.S. Food and Drug Administration (FDA) accepted for priority review our
Biologics License Application (BLA) for valoctocogene roxaparvovec for the treatment of adults with severe hemophilia A. The Prescription Drug
User Fee Act (PDUFA) target action date for the BLA has been set for August 21, 2020. In December 2019, the European Medicines Agency (EMA)
validated the Marketing Authorization Application (MAA) for valoctocogene roxaparvovec, which has been in review under accelerated assessment
since January 2020. These submissions are based on our Phase 3 interim analysis and the updated three-year Phase 1/2 data of patients treated
with valoctocogene roxaparvovec. Both submissions represent the first time a gene therapy product for any type of hemophilia indication is under
review for marketing authorization by health authorities.

In August 2019 we announced the discontinuation of the valoctocogene roxaparvovec study with the 4e13 vg/kg dose given the overwhelming
preference by patients to be treated with the 6e13 vg/kg dose. We have dosed 134 study participants in the full GENEr8-1 Phase 3 open-label study
and the 52-week results are anticipated in the first quarter of 2021. Although the trial is open-label, we have instituted a data access plan designed
to substantially mirror a blinded trial, such that only a very limited group of medical personnel who are assisting with monitoring and managing the
trial have access to any portion of the ongoing results, and then only to the extent necessary to perform their monitoring responsibilities.

BMN 307 - In January 2020, both the U.S. FDA and the Medicines and Healthcare Products Regulatory Agency in the United Kingdom granted us
Investigational New Drug (IND) status and approved our Clinical Trial Application (CTA), respectively, for BMN 307. We expect to start dosing
patients in PHEARLESS, a Phase 1/2 study of BMN 307, in the first quarter of 2020 with product made at commercial scale from our gene therapy
manufacturing facility. Both the FDA and EMA have granted BMN 307 Orphan status.

Vosoritide – In December 2019, we reported positive final results from the randomized, double-blind, placebo-controlled, Phase 3 study evaluating
the efficacy and safety of vosoritide. The study enrolled 121 children aged 5 to 14 with achondroplasia, the most common form of disproportionate
short stature. The placebo-adjusted increased change from baseline in growth velocity after one year of treatment with vosoritide, the primary
endpoint, was 1.6cm/yr (p<0.0001). The results were consistent across the broad patient population studied. Vosoritide was generally well tolerated
with no clinically significant blood pressure changes. Based on these results, we plan to meet with the health authorities in the first half of 2020 to
discuss plans for submitting marketing applications in 2020.

In November 2019, we announced that vosoritide will be studied in broader genetic statural abnormalities, starting with dominantly inherited short
stature (DISS), as part of a research collaboration with Children's National Hospital. We expect the trial with vosoritide for DISS to being mid-2020.

BMN 331 - In November 2019, we announced our third gene therapy product candidate, BMN 331, for the treatment of hereditary angioedema. We
expect to begin IND-enabling studies for BMN 331 in early to mid-2020.

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Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

•

•

BMN 250 - In October 2019, we entered into a licensing agreement with a third party for tralesinidase alfa (BMN 250) an investigational Enzyme
Replacement Therapy (ERT) for MPS IIIB or Sanfilippo Syndrome Type B. We received a minority stake in the third party and we are entitled to
receive milestone payments if certain development, regulatory and sales milestones are met and royalties on net sales of BMN 250. Upon closing,
the third party assumed all financial obligations associated with the continued development and commercialization of BMN 250.

Brineura - In February 2019, we announced that twenty-three patients in the ongoing open-label extension study treated with Brineura continued to
show a reduced rate of decline compared to a natural history cohort of CLN2 disease for three years as measured by the CLN2 Clinical Rating
Scale.

Outlook 2020

In 2020, we will continue to focus on our key operating objectives which include continued progression of our product pipeline and continued uptake of

our commercial products. From a research and development (R&D) perspective, we expect to continue to invest in our various ongoing clinical studies, which
support both our commercial products and pipeline of new product candidates. We expect to move forward on a number of late-stage clinical studies for new
product candidates and plan to file marketing applications for various therapeutic areas.

From a commercial perspective, we expect to continue to build-out our commercial organization to support the commercialization of Brineura and

Palynziq and incur pre-commercialization expenses related to valoctocogene roxaparvovec. Additionally, in January 2020, we completed the sale of worldwide
rights to Firdapse, our commercial product for the treatment of Lambert-Eaton myasthenic syndrome, to a third party in exchange for a one-time payment of
$67.0 million. Under the terms of the agreement, we agreed to provide certain services to the third-party purchaser, such as customer sales and support, for up
to 12 months after the closing of the transaction.

We continue to monitor conditions in the macroeconomic environment that could affect our ability to achieve our goals, such as changes in the
reimbursement and payer landscape, a worsening of economic conditions in certain key markets, particularly in Europe and Latin America, patent expiration of
competitive products and the launch of generic competitors, such as generic versions of Kuvan, which we expect to first become available in the U.S. in the
fourth quarter of 2020, government pricing pressures internationally and the potential volatility in foreign currency exchange rates. We will adjust our business
processes, as appropriate, to attempt to mitigate these risks to our business.

We expect that our product pipeline investments and expanding commercial infrastructure will enable us to execute on our 2020 operating objectives.

2019 Financial Highlights

Key components of our results of operations include the following:

Net product revenues (1)
Cost of sales

R&D expense
Selling, general and administrative (SG&A) expense

Provision for (benefit from) income taxes

Net loss

Years Ended December 31,

2019

2018

2017

1,661.0    $

1,470.4    $

1,270.4   

359.5    $

715.0    $
680.9    $

(71.0)   $

(23.8)   $

315.3    $

696.3    $
604.4    $

(65.5)   $

(77.2)   $

241.8   

610.8   
554.3   

81.2   

(117.0)  

$

$

$
$

$

$

(1)  On January 1, 2018 we adopted Accounting Standard Codification (ASC) 606, Revenue from Contracts with Customers (ASC Topic 606) using the modified retrospective

method. Results for 2019 and 2018 are presented under ASC Topic 606, while 2017 amounts are not adjusted and continue to be reported in accordance with our
historic accounting under ASC Topic 605, Revenue Recognition.

The decrease in Net Loss for the year ended December 31, 2019 as compared to 2018 was primarily attributed to:

•

•

increased gross profits driven by higher sales volume for products marketed by us; and

increased benefit from income taxes; partially offset by

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Table of Contents

Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

•

•

increased SG&A expense primarily in support of EU commercial launch and continued U.S expansion of Palynziq and market preparation related
to valoctocogene roxaparvovec; and

increased R&D expense primarily attributed to preclinical and manufacturing activities related to PKU gene therapy development program and
clinical activities related to valoctocogene roxaparvovec.

See “Results of Operations” below for additional information related to the Net Loss fluctuations presented above.

Our cash, cash equivalents and investments totaled $1.2 billion as of December 31, 2019, compared to $1.3 billion as of December 31, 2018. We

have historically financed our operations primarily through our cash flows from operating activities and the issuance of common stock and convertible debt. We
will be highly dependent on our net product revenues to supplement our current liquidity and fund our operations for the foreseeable future. We may in the
future elect to supplement this with further debt or equity offerings or commercial borrowing. Further, depending on market conditions, our financial position and
performance and other factors, we may in the future choose to use a portion of our cash, cash equivalents or investments to repurchase our convertible debt or
other securities. See “Financial Position, Liquidity and Capital Resources” below for a further discussion of our liquidity and capital resources.

Critical Accounting Policies, Estimates and Judgments

In preparing our Consolidated Financial Statements in accordance with U.S. GAAP and pursuant to the rules and regulations promulgated by the

Securities and Exchange Commission (the SEC), we make assumptions, judgments and estimates that can have a significant impact on our net income/loss
and affect the reported amounts of certain assets, liabilities, revenue and expenses, and related disclosures. On an ongoing basis, we evaluate our estimates
and discuss our critical accounting policies and estimates with the Audit Committee of our Board of Directors. We base our estimates on historical experience
and various other assumptions that we believe to be reasonable under the circumstances. Actual results could differ materially from these estimates under
different assumptions or conditions.

While our significant accounting policies are more fully described in Note 3 to our accompanying Consolidated Financial Statements included in this
Annual Report on Form 10-K, we believe the critical accounting policies below reflect the more significant judgments and estimates used in the preparation of
our Consolidated Financial Statements.

•

•

•
•

•

Revenue Recognition and Related Allowances

Inventory Produced Prior to Regulatory Approval

Valuation of Goodwill and Acquired Intangible Assets
Valuation of Contingent Consideration

Income Taxes

Historically, our assumptions, judgments and estimates relative to our critical accounting policies have not differed materially from actual results.

Revenue Recognition and Related Allowances

Net Product Revenues – Following the adoption of ASC Topic 606, we recognize revenue when the customer obtains control of promised goods or

services, in an amount that reflects the consideration which we expect to receive in exchange for those goods or services. For Aldurazyme revenues, we
receive a payment ranging from 39.5% to 50% on worldwide net Aldurazyme sales by Sanofi Genzyme (Genzyme) depending on sales volume, which is
included in Net Product Revenues in our Consolidated Statements of Operations. Under ASC Topic 606, we recognize our best estimate of the entire revenue
that we expect to receive when the product is released and control is transferred to Genzyme. We record Aldurazyme net product revenues based on the
estimated variable consideration payable when the product is sold through by Genzyme. Actual amounts of consideration ultimately received may differ from
our estimates. Differences between the estimated variable consideration to be received from Genzyme and actual payments received are not expected to be
material. If actual results vary from our estimates, we will make adjustments, which would affect Net Product Revenues and earnings in the period such
variances become known.

Prior to adoption of ASC Topic 606, for Aldurazyme revenues, we only recognized a portion of the tiered payment as product transfer revenue when

the product was released to Genzyme because all of our performance obligations were fulfilled at that point, the prices were substantially fixed or determinable
and title to, and risk of loss for, the product had transferred to Genzyme. The product transfer revenue only represented the fixed amount per unit of
Aldurazyme that Genzyme was required to pay us if the product was unsold by Genzyme. The amount of product transfer revenue was eventually deducted
from the calculated royalty recognized when the product was subsequently sold by Genzyme. We recorded the Aldurazyme revenues based on net sales
information provided by Genzyme and recorded product transfer revenues based on the fulfillment of Genzyme purchase orders in accordance with the terms
of the related agreements with Genzyme.

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Table of Contents

Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

Gross-to-Net Sales Adjustments – We record product sales net of estimated mandatory and supplemental discounts to government payers, in addition

to discounts to private payers, and other related charges. Rebates, cash discounts and distributor fees represent the majority of our gross-to-net deductions
and are recorded in the same period the related sales occur. Rebates include amounts paid to Medicaid, other government programs, certain managed care
providers, as well as foreign government rebates. Rebates, cash discounts and distributor fees are estimates based on contractual arrangements or statutory
obligations, which may vary by product and payer. Estimation requires evaluation of our historical experience, customer mix, current contractual and statutory
obligations, specific known market events and trends and industry data. We evaluate our customer mix to estimate which sales will be subject to these revenue
dilutive items and consider changes to government program guidelines that would impact the actual rebates and/or our estimates of which sales qualify for
such rebates.

We update our estimates and assumptions each quarter based on actual historical experience, current contractual and statutory requirements,

specific known market events and trends and forecasted customer buying and payment patters and record any necessary adjustments to our reserves to
reflect current information. We believe the methodologies that we use to estimate allowances are reasonable and appropriate given the facts and
circumstances. However, actual results may differ significantly from our estimates.

The following table summarizes the consolidated activities and ending balances of all our gross-to-net sales adjustments:

Year ended December 31, 2019
Year ended December 31, 2018

Year ended December 31, 2017

Inventory Produced Prior to Regulatory Approval

Balance at
Beginning of Year

Provision for
Current Period
Sales

Payments

Balance at End of
Year

$

$

80.7    $
63.3   

48.8    $

198.1    $
151.6   

121.0    $

(164.4)   $
(134.2)  

(106.5)   $

114.4   
80.7   

63.3   

When future commercialization for a product candidate is probable and management expects to realize economic benefit in the future, we capitalize
pre-launch inventory costs prior to regulatory approval. For inventories that are capitalized in preparation of product launch, management considers a number
of factors, including the product candidate’s current status in the regulatory approval process, results from the related pivotal clinical trial, results from meetings
with relevant regulatory agencies prior to the filing of regulatory applications, historical experience, as well as potential impediments to the approval process
such as product safety or efficacy, commercialization and market trends.

In applying the lower of cost or net realizable value to pre-launch inventory, we estimate a range of likely commercial prices based on our comparable

commercial products and consider the product candidate’s stability data for all of the pre-approval production to date to determine whether there is adequate
expected shelf life for the capitalized pre-launch production costs. If the criteria for capitalizing inventory produced prior to regulatory approval are not met, we
recognize such costs as R&D expense in the period incurred. As of December 31, 2019, there were $29.2 million of valoctocogene roxaparvovec pre-launch
inventory costs on our Consolidated Balance Sheet.

Valuation of Goodwill and Acquired Intangible Assets

We have recorded goodwill and acquired intangible assets primarily related to in-process research and development (IPR&D) projects through

acquisitions accounted for as business combinations. When identifiable intangible assets, including IPR&D, are acquired, we determine the fair value of these
assets as of the acquisition date. Discounted cash flow models are typically used in these valuations if quoted market prices are not available, and the models
require significant estimates and assumptions including but not limited to:

•

•

•

•

•

estimating the time and resources needed to complete the development and approval of product candidate;

estimating future cash flows from product sales;

developing appropriate probability of success rates for unapproved product candidates considering their stages of development;

projecting timing of regulatory approval; and

risks related to the viability of and potential alternative treatments in any future target markets.

59

Table of Contents

Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

Goodwill represents the excess of purchase price over fair value of net assets acquired in a business combination accounted for by the acquisition

method of accounting and is not amortized, but subject to impairment testing. We review our goodwill and indefinite lived intangible assets for impairment
annually in the fourth quarter, or more frequently if warranted by events or changes in circumstances indicate that the carrying amount may not be recoverable.

We assess goodwill impairment by comparing the fair value of our single reporting unit with its carrying amount. If the carrying value of the reporting

unit exceeds its fair value, an impairment loss equal to the difference will be recorded.

We assess impairment of indefinite-lived intangible assets first by performing a qualitative assessment. If the qualitative assessment indicates that it is

more likely than not that the fair value of our indefinite-lived intangible assets is less than its carrying amount, then we will perform a quantitative assessment
and record an impairment loss. We assess definite-lived intangible assets for recoverability when there is an indication of impairment by comparing the
estimated undiscounted future cash flows expected to result from the use of the asset or asset group and its eventual disposition to the carrying amount of the
asset or asset group. Any excess of the carrying value of the asset or asset group over its estimated fair value is recognized as an impairment loss.

Valuation of Contingent Consideration

Significant estimates and judgments are required in determining the acquisition fair value of any contingent obligations incurred in connection with an
acquisition. We estimate the fair value of contingent consideration utilizing a probability-based income approach inclusive of an estimated discount rate. Each
period we reassess the fair value of the contingent consideration associated with certain acquisitions and record increases in the fair value as contingent
consideration expense and record decreases in the fair value as a reduction of contingent consideration expense. Changes in the fair value of the contingent
consideration can result from changes to one or multiple inputs including the estimated probability with respect to regulatory approval, changes in the assumed
timing of when milestones are likely to be achieved and changes in assumed discount periods and rates. Accordingly, subsequent changes in the underlying
facts and circumstances could result in changes to our estimates and assumptions, which could have a material impact on the estimated future fair values of
contingent consideration.

We believe the fair value used to record contingent consideration incurred in connection with business combinations is based on reasonable estimates

and assumptions given the facts and circumstances as of the related valuation date.

Income Taxes

We calculate and provide for income taxes in each of the tax jurisdictions in which we operate. Our Consolidated Balance Sheets reflect net deferred
tax assets and liabilities, which are measured using enacted tax rates. The net deferred tax assets primarily represent the tax benefit of tax credits and timing
differences between book and tax recognition of certain revenue and expense items, net of a valuation allowance. When it is more likely than not that all or
some portion of deferred tax assets may not be realized, we establish a valuation allowance for the amount that may not be realized. We utilize financial
projections to support our net deferred tax assets, which contain significant assumptions and estimates of future operations. If such assumptions were to differ
significantly, it may have a material impact on our ability to realize our deferred tax assets. Changes in our valuation allowance will result in a change to tax
expense.

We establish liabilities or reduce assets for certain tax positions when we believe those certain tax positions are not more likely than not to be

sustained if challenged. Each quarter, we evaluate these uncertain tax positions and adjust the related tax assets and liabilities in light of changing facts and
circumstances.

We are subject to income taxes in the U.S. and various foreign jurisdictions, including Ireland. Due to economic and political conditions, various

countries are actively considering changes to existing tax laws. We cannot predict the form or timing of potential legislative changes that could have a material
adverse impact on our results of operations. In addition, significant judgment is required in determining our worldwide provision for income taxes. Management
is not aware of any potential changes that would have a material effect on our Consolidated Financial Statements.

Recent Accounting Pronouncements

See Note 4 to our accompanying Consolidated Financial Statements for a full description of recent accounting pronouncements and our expectation

of their impact, if any, on our results of operations and financial condition.

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Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

Results of Operations

Net Loss

Net Loss consisted of the following:

Years Ended December 31,

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

Total revenues

Cost of sales

R&D expense

SG&A expense
Intangible asset amortization and contingent

consideration

Gain on sale of intangible asset

Other, net
Provision for (benefit from) income taxes

$

1,704.0    $
359.5   

1,491.2    $
315.3   

1,313.6    $
241.8   

212.8    $
44.2   

715.0   

680.9   

74.1   

(25.0)  

5.7   
(71.0)  

696.3   

604.4   

48.8   

(50.0)  

(19.1)  
(65.5)  

610.8   

554.3   

46.5   

(125.0)  

(21.0)  
81.2   

18.7   

76.5   

25.3   

25.0   

24.8   
(5.5)  

Net loss

$

(23.8)   $

(77.2)   $

(117.0)   $

53.4    $

177.6   
73.5   

85.5   

50.1   

2.3   

75.0   

1.9   
(146.7)  

39.8   

Our net loss for the year ended December 31, 2019 was $23.8 million, compared to net losses of $77.2 million and $117.0 million for the years ended

December 31, 2018 and 2017, respectively. The changes in Net Loss were primarily a result of the following:

Net Product Revenues

Net Product Revenues consisted of the following:

Aldurazyme

Brineura

Firdapse

Kuvan
Naglazyme

Palynziq

Vimizim

Years Ended December 31,

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

$

97.8    $

135.1    $

90.0    $

(37.3)   $

72.0   

22.3   

463.4   
374.3   

86.9   

544.3   

39.9   

21.7   

433.6   
345.9   

12.2   

482.0   

8.6   

18.8   

407.5   
332.2   

—   

413.3   

32.1   

0.6   

29.8   
28.4   

74.7   

62.3   

45.1   

31.3   

2.9   

26.1   
13.7   

12.2   

68.7   

Total net product revenues

$

1,661.0    $

1,470.4    $

1,270.4    $

190.6    $

200.0   

  2019 compared to 2018

The increase in Net Product Revenues for the year ended December 31, 2019 as compared to 2018 was primarily attributed to the following:

•

•

•

Palynziq: the increase was attributed to a combination of revenue from more patients achieving maintenance dosing and new patients
initiating therapy in the U.S. as the product launched in the third quarter of 2018;

Vimizim: the increase was primarily attributed to increased sales volume due to patient growth in the U.S and orders from Latin America;

Brineura: the increase was primarily attributed to growth in the number of patients in all regions;

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•

•

•

Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

Kuvan: the increase was primarily attributed to increased sales volume due to patient growth in North America and in European markets;

Naglazyme: the increase was primarily attributed to increased sales volume driven by orders from Brazil; partially offset by

Aldurazyme: the decrease was primarily attributed to decreased sales volume to Genzyme.

2018 compared to 2017

The increase in Net Product Revenues for the year ended December 31, 2018 as compared to 2017 was primarily attributed to the following:

•

•

•

•

•

•

Vimizim: the increase was primarily attributable to new patients initiating therapy and government ordering patterns;

Aldurazyme: the increase was primarily attributable to an increase in sales volume and the adoption of ASC Topic 606 on January 1, 2018,
which contributed $20.2 million to the increase;

Brineura: the increase was primarily attributable to new patients initiating therapy as the product was commercially launched in mid-2017;

Kuvan: the increase was primarily attributable to an increase in patients initiating therapy in North America;

Naglazyme: the increase was primarily attributable to new patients initiating therapy in Turkey and North America and government ordering
patterns in the Middle East, partially offset by a decrease due to the impact of orders from certain Latin American countries; and

Palynziq: the increase was primarily attributable to the conversion of clinical patients to commercial Palynziq in the U.S. in 2018 following the
commercial launch of Palynziq in July 2018.

In certain countries, such as in Latin America, governments place large periodic orders for Naglazyme and Vimizim. The ordering patterns of these

large government orders can be inconsistent and can create significant period to period variation in our revenues.

We face exposure to movements in foreign currency exchange rates, primarily the Euro. We use foreign currency exchange contracts to hedge a

percentage of our foreign currency exposure. The following table shows our Net Product Revenues denominated in USD and foreign currencies:

Sales denominated in USD

Sales denominated in foreign currencies

Total net product revenues

$

$

932.6    $

728.4   

891.7    $

578.7   

748.5    $

521.9   

1,661.0    $

1,470.4    $

1,270.4    $

40.9    $

149.7   

190.6    $

143.2   

56.8   

200.0   

Years Ended December 31,

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

The net impact of foreign currency exchange rates on product sales denominated in currencies other than USD during 2019 was unfavorable by $24.8

million, which was primarily driven by weakening relative to the USD of currencies in emerging markets such as Brazil, Colombia and Argentina from 2018 to
2019. The net impact of foreign currency exchange rates on product sales denominated in currencies other than USD during 2018 was unfavorable by $0.7
million, due primarily to minimal movements in foreign currency exchange rates from 2017 to 2018 in the underlying currencies in which our non-USD revenues
were denominated. During 2017, the net impact of foreign currency exchange rates was favorable by $5.5 million, which was primarily driven by the Brazilian
Real and the Euro. See “Quantitative and Qualitative Disclosures about Market Risk” in Part II, Item 7A of this Annual Report on Form 10-K for information on
currency exchange rate risk related to our revenues.

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Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

Royalty and Other Revenues

Royalty and Other Revenues include royalties earned on net sales of products sold and milestones achieved by licensees or sublicensees and rental

income associated with the tenants in our San Rafael, California facility.

Royalty and other revenues

$

43.0    $

20.9    $

43.2    $

22.1    $

(22.3)  

Years Ended December 31,

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

The 2019 increase in Royalty and Other Revenues compared to 2018 is primarily due to a one time license payment from a third party due to their

achievement of a regulatory milestone and royalty revenues earned from Catalyst on net product sales of Firdapse in North America, which was approved for
sale in November 2018. See Note 20 to our accompanying Consolidated Financial Statements for additional information regarding our license and
collaboration agreements.

The 2018 decrease in Royalty and Other Revenues compared to 2017 is primarily attributable to the recognition of $31.5 million net upfront license

revenue from a third party in 2017.

We expect to continue to earn royalties from third parties in the future.

Cost of Sales and Product Gross Margin

Cost of Sales includes raw materials, personnel and facility and other costs associated with manufacturing our commercial products. These costs

include production materials, production costs at our manufacturing facilities, third-party manufacturing costs, and internal and external final formulation and
packaging costs. Cost of Sales also includes royalties payable to third parties based on sales of our products.

The following table summarizes our cost of sales and product gross margin:

Total net product revenues

Cost of sales

Product gross margin

Years Ended December 31,

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

$
$

1,661.0 
359.5 

  $
  $

78.4 %

1,470.4 
315.3 

  $
  $

78.6 %

1,270.4 
241.8 

  $
  $

81.0 %

190.6 
44.2 

  $
  $

(0.2)%

200.0 
73.5 

(2.4)%

The 2019 increase in Cost of Sales compared to 2018 was primarily attributable to increased sales volumes. Product gross margins were relatively

flat in 2019 compared to 2018.

The 2018 increase in Cost of Sales compared to 2017 was primarily attributable to increased Vimizim manufacturing costs and increased sales
volume for Aldurazyme. Gross margins decreased in 2018 compared to 2017 primarily due to the impact on Aldurazyme net product revenues of adopting ASC
Topic 606 and increased Vimizim and Naglazyme manufacturing costs. Under ASC Topic 606, which we adopted on January 1, 2018, we recognize the full
amount of expected Aldurazyme revenue in the same period as related cost of sales. Prior to adoption, Aldurazyme gross margins fluctuated depending on the
mix of product transfer revenue and variable consideration recognized in the period.

We expect total product gross margin to remain near 80% over the next twelve months.

Research and Development

R&D expense includes costs associated with the research and development of product candidates and post-marketing research commitments related

to our approved products. R&D expense primarily includes preclinical and clinical studies, personnel and raw materials costs associated with manufacturing
clinical product, quality control and assurance, other R&D activities, facilities and regulatory costs.

63

 
 
Table of Contents

Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

We manage our R&D expense by identifying the R&D activities we anticipate will be performed during a given period and then prioritizing efforts

based on scientific data, probability of successful development, market potential, available human and capital resources and other similar considerations. We
continually review our product pipeline and the development status of product candidates and, as necessary, reallocate resources among the research and
development portfolio that we believe will best support the future growth of our business.

We continuously evaluate the recoverability of costs associated with pre-launch or pre-qualification manufacturing activities, and capitalize the costs
incurred related to those activities if it is determined that recoverability is highly likely and therefore future revenues are expected. When regulatory approval
and the likelihood of future revenues for a product candidate are less certain, the related manufacturing costs are expensed as R&D expenses. We capitalized
$29.2 million of manufacturing related costs for the commercial production of valoctocogene roxaparvovec from the second quarter of 2019 through
December 31, 2019 as we believe those costs are likely to be recoverable. See Note 8 to our accompanying Consolidated Financial Statements for additional
information regarding our inventory.

R&D expense increased to $715.0 million for the year ended December 31, 2019, compared to $696.3 million and $610.8 million for the years ended

December 31, 2018 and 2017 respectively. R&D expense consisted of the following:  

Years Ended December 31,

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

Valoctocogene roxaparvovec

$

Vosoritide

BMN 307
Palynziq

Brineura

Tralesinidase alfa

Other approved products
Early stage programs

Other

Total

192.8    $

120.9   

89.2   
71.7   

39.4   

27.4   

64.7   
75.0   

33.9   

161.7    $

118.2    $

31.1    $

89.3   

18.1   
94.8   

46.9   

82.2   

70.6   
68.2   

64.5   

55.1   

—   
122.1   

52.0   

56.0   

72.1   
65.4   

69.9   

31.6   

71.1   
(23.1)  

(7.5)  

(54.8)  

(5.9)  
6.8   

(30.6)  

$

715.0    $

696.3    $

610.8    $

18.7    $

43.5   

34.2   

18.1   
(27.3)  

(5.1)  

26.2   

(1.5)  
2.8   

(5.4)  

85.5   

2019 compared to 2018

The increase in R&D expense primarily comprised the following:

•

•

•

•

an increase in preclinical and manufacturing activities related to our BMN 307 development program, including clinical manufacturing costs;
and

an increase in clinical activity related to our late-stage product candidates valoctocogene roxaparvovec and vosoritide; partially offset by

a decrease in tralesinidase alfa clinical manufacturing costs; and

a decrease in costs related to Palynziq, for which capitalization of manufacturing costs began in the second quarter of 2018 following FDA
approval.

During 2020, we expect our R&D spending to be generally flat compared to 2019, primarily due to lower development costs on Palynziq and
valoctocogene roxaparvovec, along with the out-licensing of tralesinidase alfa; offset by increased spending on preclinical activities for our early stage
development programs.

2018 compared to 2017

The increase in R&D expense primarily comprised the following:

•

•

•

•

an increase in costs for clinical studies related to our valoctocogene roxaparvovec and vosoritide product candidates;

an increase in costs of the manufacturing of our tralesinidase alfa clinical product; and

an increase in costs related to other R&D expenses primarily related to activity for our preclinical programs; partially offset by

a decrease in costs related to Palynziq, for which capitalization of manufacturing costs began in the second quarter of 2018 following FDA
approval; and

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Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

•

a decrease in clinical manufacturing costs related to Brineura.

Selling, General and Administrative

Sales and Marketing (S&M) expense primarily consisted of employee-related expenses for our sales group, brand marketing, patient support groups

and pre-commercialization expenses related to our product candidates. General and administrative (G&A) expense primarily consisted of corporate support
and other administrative expenses, including employee-related expenses.

SG&A expense increased to $680.9 million for the year ended December 31, 2019, compared to $604.4 million and $554.3 million for the years ended

December 31, 2018 and 2017, respectively. SG&A expenses consisted of the following:

S&M expense

G&A expense

Total SG&A expense

Years Ended December 31,

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

$

$

382.2    $

298.7   

680.9    $

324.2    $

280.2   

604.4    $

291.5    $

262.8   

554.3    $

58.0    $

18.5   

76.5    $

32.7   

17.4   

50.1   

Components of S&M expense were as follows:

S&M expense by product:

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

Years Ended December 31,

PKU Products

MPS Products
Brineura

Valoctocogene roxaparvovec

Other

Total S&M expense

2019 compared to 2018

$

$

137.2    $

118.6    $

99.1    $

18.6    $

119.2   
45.4   

50.3   

30.1   

115.8   
44.2   

17.0   

28.6   

129.2   
31.6   

7.7   

23.9   

3.4   
1.2   

33.3   

1.5   

382.2    $

324.2    $

291.5    $

58.0    $

19.5   

(13.4)  
12.6   

9.3   

4.7   

32.7   

The increase in S&M expense was primarily a result of an increase in pre-commercialization activities related to valoctocogene roxaparvovec and

commercialization activities in support of the continued U.S. expansion and EU commercial launches of Palynziq.

The increase in G&A expense was primarily due to consulting fees and higher employee related expenses to support our growth.

We expect SG&A expense to increase in future periods as a result of pre-commercialization efforts related to valoctocogene roxaparvovec and the

continued commercial launch of Palynziq.

2018 compared to 2017

The increase in S&M expense was primarily a result of the following:

•

•

•

•

the Palynziq U.S. commercial launch and European pre-commercialization activities;

the continued expansion of marketing activities related to Brineura; and

pre-commercialization activities related to our valoctocogene roxaparvovec product candidate; partially offset by

a decrease in marketing activities related to our mature products as resources were shifted toward activities noted above.

The increase in G&A expense was primarily due to increased personnel-related costs mainly due to increased headcount to support our growth and

other administrative-related costs.

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Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

Intangible Asset Amortization and Contingent Consideration and Gain on Sale of Intangible Assets

Changes during the periods presented for Intangible Asset Amortization and Contingent Consideration and Gain on Sale of Intangible Assets were as

follows:

Increases in the fair value of contingent

consideration

Amortization of intangible assets

Total intangible asset amortization and contingent

consideration

Gain on sale of intangible assets

2019 compared to 2018

$

$

$

Years Ended December 31,

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

20.6    $

53.5   

74.1    $

18.5    $

30.3   

48.8    $

10.3    $

36.2   

46.5    $

2.1    $

23.2   

25.3    $

8.2   

(5.9)  

2.3   

25.0    $

50.0    $

125.0    $

(25.0)   $

(75.0)  

Fair value of contingent consideration: the increase in the fair value of the contingent consideration in 2019 was primarily attributable to changes in the

estimated probability of achieving development milestones, related to our Palynziq program which received EU marketing approval in May 2019.

Amortization of intangible assets: the increase in 2019 was due to the Palynziq IPR&D assets that were placed into service following EU marketing

approval in May 2019.

Gain on Sale of Intangible Assets: we recognized a gain of $25.0 million in 2019 due to the achievement of milestones during the second and fourth

quarter of 2019 by third parties, related to previously sold intangible assets. See Note 6 to the accompanying Consolidated Financial Statements for additional
information.

2018 compared to 2017

Fair value of contingent consideration: the changes in the fair value of the contingent consideration in 2018 were attributable to changes in the
estimated probability of achieving development milestones based on the current status of the related development programs, which was primarily related to the
continued progress of the Palynziq program to support the filing and progress toward approval of the European MAA.

Amortization of intangible assets: the decrease in 2018 was due to a 2017 impairment of IPR&D assets that we had acquired from Zacharon
Pharmaceuticals, Inc. (Zacharon), as the related development program was terminated. It is our policy to report impairment charges that are not material as a
component of Intangible Asset Amortization and Contingent Consideration on our Consolidated Statements of Operations.

Gain on Sale of Intangible Assets: we recognized a gain of $50.0 million in the year ended December 31, 2018 due to a third party’s achievement of

development and regulatory approval milestones related to a previously sold intangible asset. See Note 6 to the accompanying Consolidated Financial
Statements for additional information.

Interest Income

We invest our cash equivalents and investments in U.S. government securities and other high credit quality debt securities in order to limit default and

market risk. Interest income was comprised of the following:

Interest income

$

22.7    $

22.8    $

14.9    $

(0.1)   $

7.9   

Years Ended December 31,

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

Interest income during 2019 was flat compared to 2018 as higher average interest rates offset the impact of lower investment balances. The increase

in interest income during 2018 compared to 2017 was primarily due to a higher investment balance during the period and higher average interest rate on
investments.

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Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

We expect interest income to remain relatively flat over the next 12 months.

Interest Expense

We incur interest expense primarily on our convertible debt. Interest expense consisted of the following:

Total interest expense

$

23.5    $

43.7    $

42.7    $

(20.2)   $

1.0   

Years Ended December 31,

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

The decrease in interest expense in 2019 compared to 2018 was primarily due to the maturity of our 0.75% senior subordinated convertible notes,

which matured on October 15, 2018 (the 2018 Notes).

The increase in interest expense in 2018 compared to 2017 was primarily due to the issuance of our 0.599% senior subordinated convertible notes

due in 2024 (the 2024 Notes) in August 2017, partially offset by the maturity of the 2018 Notes in October 2018.

We expect interest expense to remain relatively flat over the next 12 months. See Note 13 to our accompanying Consolidated Financial Statements

for additional information regarding our debt.

Provision for (Benefit from) Income Taxes

On December 22, 2017, the Tax Cuts and Jobs Act (2017 Tax Act) was signed into law. The 2017 Tax Act has resulted in significant changes to the

U.S. corporate income tax system. These changes include a federal statutory rate reduction from 35% to 21% and the elimination or reduction of certain
domestic deductions and credits, including a 50% reduction in the orphan drug credit. The 2017 Tax Act changed U.S. international taxation from a worldwide
basis to a modified territorial system that includes base erosion prevention measures on foreign earnings. This resulted in our foreign subsidiaries being
subject to U.S. taxation in the current year. Changes to tax laws and tax rates are required to be accounted for in the period of the enactment, therefore our
2017 tax provision included the impact of the 2017 Tax Act.

We recognized an income tax benefit of $71.0 million and $65.5 million in 2019 and 2018, respectively, and income tax expense of $81.2 million in
2017. Provision for (benefit from) income taxes for 2019, 2018 and 2017 consisted of state, federal and foreign current tax expense which was offset by tax
benefits related to stock option exercises and deferred tax benefits from federal orphan drug credits, federal R&D credits and California R&D credits. The
provision for (benefit from) income taxes for the years ended December 31, 2019 and 2017 were further impacted by the following items:

•

•

•

2019 included a tax benefit of $29.6 million for the release of the valuation allowance against the net deferred tax asset of our Dutch
subsidiary. In the second quarter of 2019, we determined that it is more likely than not that the deferred tax assets, including net operating
losses and tax credit carryforwards of our Dutch subsidiary, will be realized. In making this determination, we analyzed our recent history of
earnings, forecasts of future earnings and cumulative earnings for the last three years of our Dutch subsidiary and we reached the
conclusion that it was appropriate to release the valuation allowance reserve.

2017 included a provisional expense of $42.3 million related to the 2017 Tax Act primarily consisting of $33.1 million for the re-measurement
of the net deferred tax assets at the lower enacted corporate tax rate and $9.2 million related to the new limitations on tax deductible
compensation. Our deferred tax assets and liabilities are measured at the enacted tax rate expected to apply when these temporary
differences are expected to be realized or settled. Additionally, we established a $41.4 million valuation allowance on state tax credits as
management assessed the impact of the 2017 Tax Act on our financial projections and concluded that it is more likely than not that these
state tax credits will not be utilized in the foreseeable future because these credits do not expire and we project that we will be generating
more credits than we will utilize on an annual basis. The 2017 Tax Act also includes a one-time mandatory deemed repatriation toll tax on
accumulated earnings of our foreign subsidiaries that did not impact us due to a net deficit in these foreign subsidiaries.

In December 2017, the Securities and Exchange Commission staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting
Implications of the Tax Cuts and Jobs Act (SAB 118), which allowed us to record provisional amounts during a measurement period not to
extend beyond one year of the enactment date. As a result, we previously provided a provisional estimate of the effect of the 2017 Tax Act in
our financial statements. In the fourth quarter of 2018, we completed our analysis to determine the effect of the 2017 Tax Act and recorded
immaterial adjustments as of December 31, 2018. We have elected to account for Global Intangible Low-taxed Income (GILTI) as a current
period expense when incurred.

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Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

Financial Position, Liquidity and Capital Resources

As of December 31, 2019, we had $1.2 billion in cash, cash equivalents, and investments. We expect to fund our operations with our net product

revenues from our commercial products, cash, cash equivalents and investments, potentially supplemented by proceeds from equity or debt financings and
loans, or collaborative agreements with corporate partners. We may require additional financing to fund the repayment of our convertible debt, future milestone
payments and our future operations, including the commercialization of our products and product candidates currently under development, preclinical studies
and clinical trials, and potential licenses and acquisitions. We will need to raise additional funds from equity or debt securities, loans or collaborative
agreements if we are unable to satisfy our liquidity requirements. The timing and mix of our funding options could change depending on many factors, including
how much we elect to spend on our development programs, potential licenses and acquisitions of complementary technologies, products and companies or if
we elect to settle all or a portion of our convertible debt in cash.

In managing our liquidity needs in the U.S., we do not rely on unrepatriated earnings as a source of funds and we have not provided for U.S. federal

or state income taxes on these undistributed foreign earnings. We do not record U.S. tax expense on the undistributed earnings of our controlled foreign
subsidiaries as these earnings are intended to be indefinitely reinvested offshore. As of December 31, 2019, $162.7 million of our $1.2 billion balance of cash,
cash equivalents and investments was held in foreign subsidiaries, a significant portion of which is required to fund the liquidity needs of these foreign
subsidiaries See Note 18 to our accompanying Consolidated Financial Statements for additional discussion regarding income taxes.

We are mindful that conditions in the current macroeconomic environment could affect our ability to achieve our goals. We sell our products in
countries that face economic volatility and weakness. Although we have historically collected receivables from customers in such countries, sustained
weakness or further deterioration of the local economies and currencies may cause customers in those countries to be unable to pay for our products. We will
continue to monitor these conditions and will attempt to adjust our business processes, as appropriate, to mitigate macroeconomic risks to our business.

Our liquidity and capital resources as of December 31 were as follows:

Cash and cash equivalents

Short-term investments
Long-term investments

Cash, cash equivalents and investments

Convertible debt, net

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

$

$

$

437.4    $

494.0    $

598.0    $

(56.6)   $

316.4   
412.0   

590.3   
235.9   

797.9   
385.8   

(273.9)  
176.1   

1,165.8    $

1,320.2    $

1,781.7    $

(154.4)   $

848.1    $

830.4    $

1,174.5    $

17.7    $

(104.0)  

(207.6)  
(149.9)  

(461.5)  

(344.1)  

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Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

Our cash flows for each of the years ended December 31 are summarized as follows:

Cash & cash equivalents at the beginning of the

period
Net cash provided by (used in) operating activities

Net cash provided by (used in) investing activities
Net cash provided by (used in) financing activities

Foreign exchange impact

Cash & cash equivalents at the end of the period
Short-term and long-term investments

Cash, cash equivalents and investments

$

$

$

Cash Provided by (Used in) Operating Activities

2019

2018

2017

2019 vs. 2018

2018 vs. 2017

494.0    $

598.0    $

408.3    $

(104.0)   $

48.3   

(31.0)  
(74.7)  

0.8   

20.2   

264.4   
(388.0)  

(0.6)  

(8.8)  

(305.5)  
507.1   

(3.1)  

28.1   

(295.4)  
313.3   

1.4   

437.4    $

728.4   

494.0    $

826.2   

598.0    $

1,183.7   

(56.6)   $

(97.8)  

1,165.8    $

1,320.2    $

1,781.7    $

(154.4)   $

189.7   

29.0   

569.9   
(895.1)  

2.5   

(104.0)  

(357.5)  

(461.5)  

Net cash provided by operating activities during 2019 was $48.3 million, compared to cash provided by operating activities of $20.2 million during

2018. Cash provided by operating activities was primarily attributed to the timing of payments to vendors and cash receipts from customers partially offset by
higher inventory levels.

Net cash provided by operating activities during 2018 was $20.2 million, compared to cash used in operating activities of $8.8 million during 2017.

Cash provided by operating activities was primarily attributed to the timing of cash receipts from customers and payments to vendors, partially offset by higher
inventory levels. The increase in accounts receivable is primarily due to the increase in Genzyme unbilled receivables due to the adoption of ASC Topic 606.

Cash Provided by (Used in) Investing Activities

Net cash used in investing activities during 2019 was $31.0 million, compared to net cash provided by investing activities of $264.4 million during

2018. Net cash used in investing activities in 2019 was primarily attributable to $145.0 million in purchases of property, plant and equipment, partially offset by
$108.2 million in net maturities of available-for-sale debt securities and $25.0 million in milestone payment receipts related to previously sold intangible assets.

Net cash provided by investing activities during 2018 was $264.4 million, compared to net cash used in investing activities of $305.5 million during
2017. Net cash provided by investing activities in 2018 was primarily attributable to $359.0 million in net maturities of available-for-sale debt securities and
$50.0 million in milestone payment receipts related to a previously sold intangible asset, partially offset by $144.6 million in purchases of property, plant and
equipment.

We expect to continue to make significant capital investments in our manufacturing facilities and our corporate headquarters to accommodate

anticipated headcount growth.

Cash Provided by (Used in) Financing Activities

Net cash used in financing activities during 2019 was $74.7 million, compared to net cash used in financing activities of $388.0 million during 2018.

Net cash used in financing activities in 2019 was primarily attributed to $58.5 million in payments of contingent consideration and cash paid for taxes related to
net settlement of equity awards.

Net cash used in financing activities during 2018 was $388.0 million, compared to net cash provided by financing activities of $507.1 million during
2017. Net cash used in financing activities in 2018 was primarily related to the $375.0 million settlement of the 2018 Notes, which matured in October 2018,
partially offset by $31.6 million of net proceeds from issuances under our equity

69

Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

Table of Contents

incentive plans.

Other Information

Our $870.0 million (undiscounted) of total convertible debt as of December 31, 2019 will impact our liquidity due to the semi-annual cash interest

payments. As of December 31, 2019, our indebtedness consisted of the 2020 Notes and the 2024 Notes (together with the 2020 Notes, the Notes), which, if
not converted, will be required to be repaid in cash at maturity in October 2020 and August 2024, respectively. We will need cash not only to pay the ongoing
interest due on the Notes during their term, but also to repay the principle amount of the Notes if not converted. See Note 13 to our accompanying
Consolidated Financial Statements for additional discussion.

In the event the conditional conversion feature of the 2020 Notes is triggered, holders of the 2020 Notes will be entitled to convert the 2020 Notes at

any time during specified periods at their option. In addition, the 2020 Notes will be freely convertible on or after July 15, 2020. We may use the remaining
balance of the net proceeds we received from the issuance of the 2024 Notes to repay, repurchase or settle in cash some or all of the 2020 Notes. We may
elect to settle conversions of the 2020 Notes in cash, in whole or in part, which could further affect our liquidity. While we could seek to obtain additional third-
party financing to pay for any amounts due in cash upon such events, we cannot be sure that such third-party financing will be available on commercially
reasonable terms, if at all. We have reclassified all of the outstanding principal of the 2020 Notes as a current liability as there are less than twelve months
remaining until maturity.

Our 2018 Notes matured in October 2018 and were settled with a combination of cash and shares of our common stock, consisting of approximately

$375.0 million in cash and 190,220 in shares. The shares issued represented the value of the 2018 Notes in excess of the conversion price of $94.15, as
measured over a 25-day averaging period. The cash payment was comprised of the principal, the value of fractional shares and the value of unconverted 2018
Notes. In October 2018, pursuant to a capped call transaction, which was entered into concurrently with the issuance of the 2018 Notes, we received from the
capped call counterparties 95,127 shares of our common stock, which was accounted for as treasury shares and subsequently retired. No gain or loss was
incurred upon the extinguishment of the 2018 Notes.

In October 2018, we entered into an unsecured revolving credit facility of up to $200.0 million (the 2018 Credit Facility). The 2018 Credit Facility

includes a letter of credit subfacility and a swingline loan subfacility and is also intended to finance ongoing working capital needs and for other general
corporate purposes. Borrowings under the 2018 Credit Facility bear interest, at our option, at a rate equal to either (a) the LIBOR rate, or LIBOR successor
rate, plus an applicable margin ranging from 1.00% to 1.95% per annum, based upon our net leverage ratio and EBITDA for each of the two most recently
ended four-quarter measurement periods, or (b) the Base Rate, generally the prime lending rate, plus an applicable margin ranging from 0.00% to 0.95%,
based upon our net leverage ratio and EBITDA for each of the two most recently ended four-quarter measurement periods. Our obligations under the Credit
Facility are guaranteed by our direct subsidiary, California Corporate Center Acquisition LLC, and such obligations may in the future be guaranteed from time to
time by certain other material domestic subsidiaries. Commitment fees payable on the undrawn amount range from 0.15% to 0.35% per annum based upon
our net leverage ratio and EBITDA for each of the two most recently ended four-quarter measurement periods. The 2018 Credit Facility matures on October
19, 2021 at which time all outstanding amounts become due and payable, except that if at least $100.0 million aggregate principal amount of the 2020 Notes
remain outstanding on August 1, 2020 and certain other conditions have not been met, we may be required to repay all amounts borrowed under the 2018
Credit Facility on August 1, 2020. The 2018 Credit Facility contains financial covenants requiring us to maintain a minimum interest coverage ratio and a
minimum liquidity requirement. As of December 31, 2019, there were no outstanding amounts due on nor any usage of the 2018 Credit Facility. See Note 13 to
our accompanying Consolidated Financial Statements for additional discussion.

Funding Commitments

We cannot estimate with certainty the cost to complete any of our product development programs. Additionally, except as disclosed under “Overview”
above, we cannot precisely estimate the time to complete any of our product development programs or when we expect to receive net cash inflows from any of
our product development programs. Please see “Risk Factors” included in Part I, Item 1A of this Annual Report on Form 10-K, for a discussion of the reasons
we are unable to estimate such information, and in particular the following risk factors:

• If we fail to obtain regulatory approval to commercially market and sell our product candidates, or if approval of our product candidates is delayed, we will
be unable to generate revenue from the sale of these product candidates, our potential for generating positive cash flow will be diminished, and the
capital necessary to fund our operations will

70

Table of Contents

increase;

Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

• If we are unable to successfully develop and maintain manufacturing processes for our product candidates to produce sufficient quantities at acceptable

costs, we may be unable to support a clinical trial or be forced to terminate a program, or if we are unable to produce sufficient quantities of our
products at acceptable costs, we may be unable to meet commercial demand, lose potential revenue, have reduced margins or be forced to
terminate a program;

• If we fail to compete successfully with respect to product sales, we may be unable to generate sufficient sales to recover our expenses related to the

development of a product program or to justify continued marketing of a product and our revenue could be adversely affected.

• If we do not achieve our projected development goals in the timeframes we announce and expect, the commercialization of our product candidates may

be delayed and the credibility of our management may be adversely affected and, as a result, our stock price may decline.

Our investment in our product development programs and continued development of our existing commercial products has a major impact on our

operating performance. Our R&D expenses for the period since inception as of December 31, 2019 for certain of our key programs were as follows:

Palynziq

Valoctocogene roxaparvovec
Vosoritide

Brineura

BMN 307
Other approved products

$

Since Program
Inception

689.4   

593.8   
439.9   

326.5   

107.3   
1,115.1   

We may need or elect to increase our spending above our current long-term plans to be able to achieve our long-term goals. This may increase our
capital requirements, including: costs associated with the commercialization of our products; additional clinical trials; investments in the manufacturing of our
commercial products; preclinical studies and clinical trials for our product candidates; potential licenses and other acquisitions of complementary technologies,
products and companies; and general corporate purposes.

Our future capital requirements will depend on many factors, including, but not limited to:

•

•

•

•

•

•

our ability to successfully market and sell our products;

the time and cost necessary to develop commercial manufacturing processes, including quality systems, and to build or acquire
manufacturing capabilities;

the progress and success of our preclinical studies and clinical trials (including the manufacture of materials for use in such studies
and trials);

the timing, number, size and scope of our preclinical studies and clinical trials;

the time and cost necessary to obtain regulatory approvals and the costs of post-marketing studies which may be required by
regulatory authorities; and

the progress of research programs carried out by us.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements that are currently material or reasonably likely to be material to our consolidated financial

position or results of operations.

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Table of Contents

Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
(In millions of U.S. Dollars, except as otherwise disclosed)

Contractual and Commercial Obligations

We have contractual and commercial obligations under our convertible debt, operating leases and other obligations related to R&D activities,

purchase commitments, licenses and sales royalties with annual minimums. Our contractual obligations as of December 31, 2019 are presented in the table
below.

2020 Notes and related interest

2024 Notes and related interest
Leases

R&D and purchase commitments

Total

Payments Due within

1 Year
or Less

>1 -3
Years

> 3 - 5
Years

More
Than 5
Years

380.6    $

—    $

—    $

—    $

3.0   
13.7   

105.2   

5.9   
23.3   

1.0   

500.9   
20.4   

—   

—   
17.0   

—   

Total

380.6   

509.8   
74.4   

106.2   

502.5    $

30.2    $

521.3    $

17.0    $

1,071.0   

$

$

As of December 31, 2019, we were also subject to contingent payments totaling approximately $361.3 million upon achievement of certain
development and regulatory activities and commercial sales and licensing milestones if they occur before certain dates in the future. Of this amount,
$67.3 million related to the acquisition of certain rights and other assets with respect to Kuvan and Palynziq from Merck Serono and $243.8 million related to
programs that are no longer being developed.

As of December 31, 2019, we have recorded $50.8 million of contingent consideration on our Consolidated Balance Sheets, all of which was long-

term.

Any outstanding amounts due under the 2018 Credit Facility will be due in full in October 2021 with related interest, if any, due on a quarterly basis,

except that if at least $100.0 million aggregate principal amount of the 2020 Notes remain outstanding on August 1, 2020 and certain other conditions have not
been met, we may be required to repay all amounts borrowed under the 2018 Credit Facility on August 1, 2020. As of December 31, 2019, there was no
outstanding balance.

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Table of Contents

Item 7A. Quantitative and Qualitative Disclosure About Market Risk

We are exposed to market risks that may result from changes in foreign currency exchange rates, interest rates and credit risks. To reduce certain of

these risks, we enter into foreign currency derivative hedging transactions, follow investment guidelines and monitor outstanding trade receivables as part of
our risk management program.

Foreign Currency Exchange Rate Risk

Our operations include manufacturing and sales activities in the U.S. as well as sales activities in regions outside the U.S, including Europe, Latin

America and Asia Pacific. As a result, our financial results may be significantly affected by factors such as changes in foreign currency exchange rates or weak
economic conditions in the foreign markets in which we sell our products. Our operating results are exposed to changes in foreign currency exchange rates
between the U.S. Dollar (USD) and various foreign currencies, primarily the Euro. When the USD strengthens against these currencies, the relative value of
the sales made in the respective foreign currency decreases. Conversely, when the USD weakens against these currencies, the relative value of such sales
increases. Overall, we are a net receiver of foreign currencies and, therefore, benefit from a weaker USD and are adversely affected by a stronger USD relative
to those foreign currencies in which we transact significant business.

During 2019, approximately 44% of our net product sales were denominated in foreign currencies and 19% of our operating expenses were
denominated in foreign currencies. To partially mitigate the impact of changes in currency exchange rates on net cash flows from our foreign currency
denominated sales and operating expenses, we may enter into forward foreign currency exchange contracts (forward contracts). We also hedge certain
monetary assets and liabilities, primarily those denominated in Euros, using forward contracts, which reduces but does not eliminate our exposure to currency
fluctuations between the date the transaction is recorded and the date the cash is collected or paid. Generally, the market risks of these contracts are offset by
the corresponding gains and losses on the transactions being hedged.

We do not use derivative financial instruments for speculative trading purposes, nor do we hedge foreign currency exchange rate exposure in a

manner that entirely offsets the effects of changes in foreign currency exchange rates. The counterparties to these forward contracts are creditworthy
multinational commercial banks, which minimizes the risk of counterparty nonperformance. We regularly review our hedging program and may, as part of this
review, make changes to the program.

As of December 31, 2019, we had open forward contracts with net notional amounts of $654.7 million. A hypothetical 10% adverse movement in
foreign currency exchange rates compared with the USD relative to exchange rates at December 31, 2019 would have resulted in a reduction in the value
received over the remaining life of these contracts by approximately $68.1 million on this date and, if realized, would negatively affect earnings during the
remaining life of the contracts. The estimated fair value change was determined by measuring the impact of the hypothetical exchange rate movement on
outstanding forward contracts. This analysis does not consider the impact of the hypothetical changes in foreign currency rates would have on the forecasted
transactions that these foreign currency sensitive instruments were designated to offset. Our use of this methodology to quantify the market risk of such
instruments is subject to assumptions and actual impact could be significantly different.

Based on our overall foreign currency denominated exposures at December 31, 2019, we believe that a near-term 10% fluctuation of the USD

exchange rate could result in a potential change in the fair value of our net foreign currency denominated assets and liabilities, excluding our investments and
open forward contracts, by approximately $5.1 million. We expect to continue to enter into transactions based in foreign currencies that could be impacted by
changes in exchange rates.

Interest Rate Market Risk

Our exposure to market risk for changes in interest rates relates primarily to our investment portfolio, which includes our cash equivalents and

marketable debt securities. By policy, we place our investments with highly rated credit issuers and limit the amount of credit exposure to any one issuer. As
stated in our investment policy, we seek to improve the safety and likelihood of preservation of our invested funds by limiting default risk and market risk.

We mitigate default risk by investing in high credit quality securities and by positioning our portfolio to respond appropriately to a significant reduction

in a credit rating of any investment issuer or guarantor. The portfolio includes only marketable securities with active secondary or resale markets to ensure
portfolio liquidity.

We have outstanding $375.0 million (undiscounted) of the 2020 Notes and $495.0 million (undiscounted) of the 2024 Notes. The interest rates on

these notes are fixed and therefore they do not expose us to risk related to rising interest rates. As of December 31, 2019, the fair value of our convertible debt
was $927.5 million.

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Table of Contents

In connection with the October 2013 offering of the 2018 Notes, which matured in October 2018, and the 2020 Notes, we paid $29.8 million to

purchase a capped call covering 3,982,988 shares of our common stock with 50% related to the 2018 Notes and 50% related to the 2020 Notes. If the per
share price of our common stock remains below $94.15, the capped call transaction would be not applicable and, therefore, would provide us no benefit in
offsetting potential dilution from the 2020 Notes. If the per share price of our common stock exceeds $121.05, then, to the extent of the excess, the capped call
transaction would result in additional dilution from conversion of the 2020 Notes.

As of December 31, 2019, our investment portfolio did not include any investments with significant exposure to countries that face economic volatility

and weakness. Although not predictive in nature, we believe a hypothetical 100 basis point threshold reflects a reasonably possible near-term change in
interest rates. Based on our investment portfolio and interest rates at December 31, 2019, we believe that a 100 basis point increase in interest rates could
result in a potential loss in fair value of our investment portfolio of approximately $7.6 million. Changes in interest rates may affect the fair value of our
investment portfolio. However, we will not recognize such gains or losses in our Consolidated Statements of Operations unless the investments are sold or we
determine that the decline in the investment’s value is other than temporary.

The table below summarizes the expected maturities and average interest rates of our interest-generating investments at December 31, 2019 (in

millions):

Available-for-sale debt
securities

Average interest rate

Counterparty credit risks

2020

2021

2022

2023

2024

Thereafter

Total

Expected Maturity

$

321.4 

  $

321.6 

  $

90.2 

  $

1.9 %

1.8 %

1.8 %

—    $

—   

—    $

—   

0.1 

  $

733.3 

5.4 %

1.8 %

Our financial instruments, including derivatives, are subject to counterparty credit risk that we consider as part of the overall fair value measurement.

Our financial risk management policy limits derivative transactions by requiring transactions to be with institutions with minimum credit ratings of A or equivalent
by Standards & Poor’s, Moody's or Fitch. In addition, we have an investment policy that limits investments to certain types of debt and money market
instruments issued by institutions primarily with investment grade credit ratings and places restriction on maturities and concentrations by asset class and
issuer.

Item 8. Financial Statements and Supplementary Data

The information required to be filed in this item appears under “Exhibits, Financial Statement Schedules” in Part IV, Item 15 of this Annual Report on

Form 10-K and is set forth on pages beginning on page 77.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

An evaluation was carried out, under the supervision of and with the participation of our management, including our Chief Executive Officer and our

Acting Chief Financial Officer, of the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange
Act) as of the end of the period covered by this report. Based on the evaluation, our Chief Executive Officer and our Acting Chief Financial Officer have
concluded that our disclosure controls and procedures were effective as of December 31, 2019.

Management’s Annual Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining an adequate internal control structure and procedures for financial reporting. Under
the supervision of and with the participation of our management, including our Chief Executive Officer and our Acting Chief Financial Officer, our management
has assessed the effectiveness of our internal control over financial reporting as defined in Rule 13a-15(f) under the Exchange Act as of December 31, 2019.
Our management’s assessment was based on criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO), Internal
Control-Integrated Framework (2013).

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Table of Contents

Based on the COSO criteria, our management has concluded that our internal control over financial reporting as of December 31, 2019 was effective.

Our independent registered public accounting firm, KPMG LLP, has audited the financial statements included in this Annual Report on Form 10-K and

has issued a report on the effectiveness of our internal control over financial reporting. The report of KPMG LLP is incorporated by reference to Item 8 of this
Annual Report on Form 10-K.

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting during our most recently completed quarter that have materially affected or are

reasonably likely to materially affect our internal control over financial reporting, as defined in Rule 13a-15(f) under the Exchange Act.

Scope of the Effectiveness of Controls

Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and

the preparation of financial statements for external purposes in accordance with GAAP. Our internal control over financial reporting includes those policies and
procedures that:

•

•

•

pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect our transactions and dispositions of our assets;

provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with
GAAP, and that our receipts and expenditures are being made only in accordance with authorizations of our management and our board of
directors; and

provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of our assets that
could have a material effect on our financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any
evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions or that the degree of
compliance with the policies or procedures may deteriorate.

Item 9B. Other Information

None.

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Item 10. Directors, Executive Officers and Corporate Governance

Part III

The information required by this Item regarding our directors, executive officers and corporate governance is incorporated into this section by
reference to the sections captioned “Election of Directors” and “Executive Officers” in the proxy statement for our 2020 annual meeting of stockholders.

Item 11. Executive Compensation

The information required by this Item regarding executive compensation is incorporated into this section by reference to the section captioned

“Executive Compensation” in the proxy statement for our 2020 annual meeting of stockholders.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information required by this Item regarding security ownership of our beneficial owners, management and related stockholder matters is
incorporated into this section by reference to the section captioned “Security Ownership of Certain Beneficial Owners and Management” in the proxy statement
for our 2020 annual meeting of stockholders.

The information required by this Item regarding the securities authorized for issuance under our equity compensation plans is incorporated into this

section by reference to the section captioned “Equity Compensation Plan Information” in the proxy statement for our 2020 annual meeting of stockholders.

Item 13. Certain Relationships and Related Transactions and Director Independence

The information required by this Item regarding certain relationships, related transactions and director independence is incorporated into this section

by reference to the sections captioned “Transactions with Related Persons, Promoters and Certain Control Persons,” “Review, Approval and Ratification of
Transactions with Related Parties” and “Director Independence” in the proxy statement for our 2020 annual meeting of stockholders.

Item 14. Principal Accounting Fees and Services

The information required by this Item regarding our principal accountant fees and services is incorporated into this section by reference to the section

captioned “Independent Registered Public Accounting Firm” in the proxy statement for our 2020 annual meeting of stockholders.

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Table of Contents

Item 15. Exhibits, Financial Statement Schedules

Exhibit Index
Financial Statements

Part IV

Reports of Independent Registered Public Accounting Firm
Consolidated Financial Statements as of December 31, 2019 and 2018, and for the three years ended December 31, 2019:

Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Loss
Consolidated Statements of Changes in Stockholders’ Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements

77

Page

78

85

88
89
90
91
92
93

Table of Contents

Exhibit Index
Exhibit Number

Description

2.1 

2.2 

2.3 

2.4 

2.5 

3.1 

3.2 

4.1

4.2

4.3

4.4

4.5

4.6*

10.1†

Amended and Restated Termination and Transition Agreement, dated as of December 23, 2015, between BioMarin Pharmaceutical
Inc. and Ares Trading S.A., previously filed with the SEC on January 7, 2016 as Exhibit 2.1 to the Company’s Current Report on Form
8-K (File No. 000-26727), which is incorporated herein by reference. Portions of this exhibit (indicated by asterisks) have been omitted
pursuant to a request for confidential treatment. Omitted portions have been filed separately with the SEC.

Termination and Transition Agreement, dated as of October 1, 2015, between BioMarin Pharmaceutical Inc. and Ares Trading S.A.,
previously filed with the SEC on January 7, 2016 as Exhibit 2.3 to the Company’s Current Report on Form 8-K (File No. 000-26727),
which is incorporated herein by reference. Portions of this exhibit (indicated by asterisks) have been omitted pursuant to a request for
confidential treatment. Omitted portions have been filed separately with the SEC.

First Amendment, dated as of December 12, 2016, to the Amended and Restated Termination and Transition Agreement, dated as of
December 23, 2015 and effective as of October 1, 2015, between BioMarin Pharmaceutical Inc. and Ares Trading S.A., previously
filed with the SEC on February 27, 2017 as Exhibit 2.6 to the Company’s Annual Report on Form 10-K (File No. 000-26727), which is
incorporated herein by reference. Portions of this exhibit (indicated by asterisks) have been omitted pursuant to a request for
confidential treatment. Omitted portions have been filed separately with the SEC.

Asset Purchase Agreement between BioMarin Pharmaceutical Inc. and Medivation, Inc., dated August 21, 2015, previously filed with
the SEC on October 7, 2015 as Exhibit 2.1 to the Company’s Current Report on Form 8-K (File No. 000-26727), which is incorporated
herein by reference. The SEC has granted confidential treatment with respect to certain portions of this exhibit. Omitted portions have
been filed separately with the SEC.

Asset Purchase Agreement by and between Novartis Pharma AG, BioMarin Pharmaceutical Inc. and BioMarin Commercial Ltd.,
dated as of November 21, 2017, previously filed with the SEC on February 26, 2018 as Exhibit 10.47 to the Company’s Annual Report
on Form 10-K (File No. 000-26727), which is incorporated by reference herein.

Restated Certificate of Incorporation of BioMarin Pharmaceutical Inc., previously filed with the SEC on June 12, 2017 as Exhibit 3.2 to
the Company’s Current Report on Form 8-K (File No. 000-26727), which is incorporated herein by reference.

Amended and Restated Bylaws of BioMarin Pharmaceutical Inc., previously filed with the SEC on September 24, 2018 as Exhibit 3.1
to the Company’s Current Report on Form 8-K (File No. 000-26727), which is incorporated herein by reference.

Indenture, dated as of October 15, 2013, between BioMarin Pharmaceutical Inc. and Wilmington Trust, National Association,
previously filed with the SEC on October 15, 2013 as Exhibit 4.1 to the Company’s Current Report on Form 8-K (File No. 000-26727),
which is incorporated herein by reference.

First Supplemental Indenture, dated as of October 15, 2013, between BioMarin Pharmaceutical Inc. and Wilmington Trust, National
Association (including the form of 0.75% Senior Subordinated Convertible Notes due 2018), previously filed with the SEC on October
15, 2013 as Exhibit 4.2 to the Company’s Current Report on Form 8-K (File No. 000-26727), which is incorporated herein by
reference.

Second Supplemental Indenture, dated as of October 15, 2013, between BioMarin Pharmaceutical Inc. and Wilmington Trust,
National Association (including the form of 1.50% Senior Subordinated Convertible Notes due 2020), previously filed with the SEC on
October 15, 2013 as Exhibit 4.3 to the Company’s Current Report on Form 8-K (File No. 000-26727), which is incorporated herein by
reference.

Base Indenture, dated August 11, 2017, between the Company and Wilmington Trust, National Association, as Trustee, previously
filed with the SEC on August 11, 2017 as Exhibit 4.1 to the Company’s Current Report on Form 8-K (File No. 000-26727), which is
incorporated herein by reference.

First Supplemental Indenture, dated August 11, 2017, between the Company and Wilmington Trust, National Association, as Trustee
(including the form of 0.599% Senior Subordinated Convertible Note due 2024), previously filed with the SEC on August 11, 2017 as
Exhibit 4.2 to the Company’s Current Report on Form 8-K (File No. 000-26727), which is incorporated herein by reference.

Description of Capital Stock

Form of Indemnification Agreement for Directors and Officers, previously filed with the SEC on December 19, 2016 as Exhibit 10.1 to
the Company’s Current Report on Form 8-K (File No. 000-26727), which is incorporated herein by reference.

78

 
 
 
 
 
 
 
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10.2†

10.3†

10.4†

10.5†

10.6†

10.7†

10.8

10.9

10.10

10.11

10.12

10.13

10.14†

10.15†

10.16†

10.17

BioMarin Pharmaceutical Inc. Amended and Restated 2006 Employee Stock Purchase Plan, as amended and restated April 12, 2019,
previously filed with the SEC on August 2, 2019 as Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q (File No. 000-
26727), which is incorporated herein by reference.

BioMarin Pharmaceutical Inc. Amended and Restated 2006 Share Incentive Plan, as adopted on May 2, 2006 and as amended and
restated on April 16, 2015, previously filed with the SEC on June 15, 2015 as Exhibit 10.1 to the Company’s Current Report on Form
8-K (File No. 000-26727), which is incorporated herein by reference.

Form of Agreement Regarding Restricted Share Units for the BioMarin Pharmaceutical Inc. 2006 Share Incentive Plan, previously
filed with the SEC on May 16, 2013 as Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 000-26727), which is
incorporated herein by reference.

Form of Amendment to Agreement Regarding Restricted Share Units for the BioMarin Pharmaceutical Inc. 2006 Share Incentive Plan,
previously filed with the SEC on December 9, 2016 as Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 000-
26727), which is incorporated herein by reference.

Amended and Restated BioMarin Pharmaceutical Inc. Nonqualified Deferred Compensation Plan, as adopted on December 1, 2005
and as amended and restated on January 1, 2009 and further amended and restated on December 19, 2013 and October 7, 2014,
previously filed with the SEC on October 14, 2014 as Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 000-
26727), which is incorporated herein by reference.

Amended and Restated Employment Agreement with Jean-Jacques Bienaimé effective December 13, 2016 previously filed with the
SEC on December 19, 2016 as Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 000-26727), which is
incorporated herein by reference.

Grant Terms and Conditions Agreement between BioMarin Pharmaceutical Inc. and Harbor-UCLA Research and Education Institute
dated April 1, 1997, as amended, previously filed with the SEC on July 21, 1999 as Exhibit 10.17 to the Company’s Amendment No. 3
to Registration Statement on Form S-1 (File No. 333-77701), which is incorporated herein by reference. The SEC has granted
confidential treatment with respect to certain portions of this exhibit. Omitted portions have been filed separately with the SEC.

License Agreement dated July 30, 2004, between BioMarin Pharmaceutical Inc. and Daiichi Suntory Pharma Co., Ltd., as amended
by Amendment No. 1 to License Agreement dated November 19, 2004, previously filed with the SEC on March 16, 2005 as Exhibit
10.25 to the Company’s Annual Report on Form 10-K (File No. 000-26727), which is incorporated herein by reference. The SEC has
granted confidential treatment with respect to certain portions of this exhibit. Omitted portions have been filed separately with the
SEC.

Operating Agreement with Genzyme Corporation, previously filed with the SEC on July 6, 1999 as Exhibit 10.30 to the Company’s
Amendment No. 2 to Registration Statement on Form S-1 (File No. 333-77701), which is incorporated herein by reference.

Manufacturing, Marketing and Sales Agreement dated as of January 1, 2008, by and among BioMarin Pharmaceutical Inc., Genzyme
Corporation and BioMarin/Genzyme LLC previously filed with the SEC on February 28, 2008 as Exhibit 10.30 to the Company’s
Annual Report on Form 10-K (File No. 000-26727), which is incorporated herein by reference. The SEC has granted confidential
treatment with respect to certain portions of this exhibit. Omitted portions have been filed separately with the SEC.

Amended and Restated Collaboration Agreement dated as of January 1, 2008, by and among BioMarin Pharmaceutical Inc.,
Genzyme Corporation and BioMarin/Genzyme LLC previously filed with the SEC on February 28, 2008 as Exhibit 10.31 to the
Company’s Annual Report on Form 10-K (File No. 000-26727), which is incorporated herein by reference. The SEC has granted
confidential treatment with respect to certain portions of this exhibit. Omitted portions have been filed separately with the SEC.

Members Agreement dated as of January 1, 2008 by and among BioMarin Pharmaceutical Inc., Genzyme Corporation, BioMarin
Genetics Inc., and BioMarin/Genzyme LLC previously filed with the SEC on February 28, 2008 as Exhibit 10.32 to the Company’s
Annual Report on Form 10-K (File No. 000-26727), which is incorporated herein by reference. The SEC has granted confidential
treatment with respect to certain portions of this exhibit. Omitted portions have been filed separately with the SEC.

BioMarin Pharmaceutical Inc. 2012 Inducement Plan, adopted May 8, 2012, previously filed with the SEC on May 9, 2012 as Exhibit
10.2 to the Company’s Current Report on Form 8-K (File No. 000-26727), which is incorporated herein by reference.

Form of Stock Options Agreement for the BioMarin Pharmaceutical Inc. 2006 Share Incentive Plan. (as Amended and Restated
2010), previously filed with the SEC on August 2, 2012 as Exhibit 10.11 to the Company’s Quarterly Report on Form 10-Q (File No.
000-26727), which is incorporated herein by reference.

Form of Stock Options Agreement for the BioMarin Pharmaceutical Inc. 2012 Inducement Plan, previously filed with the SEC on
August 2, 2012 as Exhibit 10.13 to the Company’s Quarterly Report on Form 10-Q (File No. 000-26727), which is incorporated herein
by reference.

Capped Call Confirmation for the 2020 Notes, dated October 8, 2013, between BioMarin Pharmaceutical Inc. and Bank of America,
N.A., previously filed with the SEC on October 11, 2013 as Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 000-
26727), which is incorporated herein by reference.

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Table of Contents

10.18

10.19

10.20

10.21

10.22

10.23

10.24†

10.25†

10.26†

10.27†

10.28

10.29

10.30†

10.31†

10.32†

10.33†

Capped Call Confirmation for the 2020 Notes, dated October 8, 2013, between BioMarin Pharmaceutical Inc. and Morgan Stanley &
Co. LLC, previously filed with the SEC on October 11, 2013 as Exhibit 10.4 to the Company’s Current Report on Form 8-K (File No.
000-26727), which is incorporated herein by reference.

Capped Call Confirmation for the 2020 Notes, dated October 8, 2013, between BioMarin Pharmaceutical Inc. and Barclays Bank PLC,
previously filed with the SEC on October 11, 2013 as Exhibit 10.6 to the Company’s Current Report on Form 8-K (File No. 000-
26727), which is incorporated herein by reference.

Additional Capped Call Confirmation for the 2020 Notes, dated October 9, 2013, between BioMarin Pharmaceutical Inc. and Bank of
America, N.A., previously filed with the SEC on October 11, 2013 as Exhibit 10.8 to the Company’s Current Report on Form 8-K (File
No. 000-26727), which is incorporated herein by reference.

Additional Capped Call Confirmation for the 2020 Notes, dated October 9, 2013, between BioMarin Pharmaceutical Inc. and Morgan
Stanley & Co. LLC, previously filed with the SEC on October 11, 2013 as Exhibit 10.10 to the Company’s Current Report on Form 8-K
(File No. 000-26727), which is incorporated herein by reference.

Additional Capped Call Confirmation for the 2020 Notes, dated October 9, 2013, between BioMarin Pharmaceutical Inc. and Barclays
Bank PLC, previously filed with the SEC on October 11, 2013 as Exhibit 10.12 to the Company’s Current Report on Form 8-K (File
No. 000-26727), which is incorporated herein by reference.
Contract of Purchase and Sale and Joint Escrow Instructions, dated December 17, 2013, for the San Rafael Corporate Center, by and
among BioMarin Pharmaceutical Inc., through its wholly-owned subsidiary, California Corporate Center Acquisition, LLC, SR
Corporate Center Phase One, LLC, and SR Corporate Center Phase Two, previously filed with the SEC on February 26, 2014 as
Exhibit 10.68 to the Company’s Annual Report on Form 10-K (File No. 000-26727), which is incorporated herein by reference.

BioMarin Pharmaceutical Inc. 2014 Inducement Plan, adopted December 17, 2014, previously filed with the SEC on December 23,
2014 as Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 000-26727), which is incorporated herein by reference.

Form of Stock Options Agreement for the BioMarin Pharmaceutical Inc. 2014 Inducement Plan, previously filed with the SEC on
March 2, 2015 as Exhibit 10.60 to the Company’s Annual Report on Form 10-K (File No. 000-26727), which is incorporated herein by
reference.

Form of Agreement Regarding Restricted Share Units for the BioMarin Pharmaceutical Inc. 2014 Inducement Plan, previously filed
with the SEC on March 2, 2015 as Exhibit 10.61 to the Company’s Annual Report on Form 10-K (File No. 000-26727), which is
incorporated herein by reference.

Form of Amended and Restated Employment Agreement for the Company’s Executive Officers (other than the Company’s Chief
Executive Officer) previously filed with the SEC on June 15, 2015 as Exhibit 10.2 to the Company’s Current Report on Form 8-K (File
No. 000-26727), which is incorporated herein by reference.

Settlement and License Agreement among BioMarin Pharmaceutical Inc., Merck & Cie, Dr. Reddy’s Laboratories, Inc. and Dr.
Reddy’s Laboratories, Ltd., dated September 14, 2015, previously filed with the SEC on November 2, 2015 as Exhibit 10.2 to the
Company’s Quarterly Report on Form 10-Q (File No. 000-26727), which is incorporated herein by reference. The SEC has granted
confidential treatment with respect to certain portions of this exhibit. Omitted portions have been filed separately with the SEC.

Settlement and License Agreement among BioMarin Pharmaceutical Inc., Merck & Cie and Par Pharmaceutical, Inc., dated as of April
12, 2017, previously filed with the SEC on November 13, 2017 as Exhibit 10.1 to the Company’s Amendment No. 1 to Quarterly
Report on Form 10-Q/A (File No. 000-26727), which is incorporated herein by reference. The SEC has granted confidential treatment
with respect to certain portions of this exhibit. Omitted portions have been filed separately with the SEC.

Form of Agreement Regarding Performance Stock Award in the Form of Restricted Stock Units for the BioMarin Pharmaceutical Inc.
2006 Share Incentive Plan, previously filed with the SEC on February 27, 2017 as Exhibit 10.50 to the Company’s Annual Report on
Form 10-K (File No. 000-26727), which is incorporated herein by reference.

BioMarin Pharmaceutical Inc. 2017 Equity Incentive Plan, as adopted April 10, 2017 and amended April 12, 2019, previously filed with
the SEC on August 2, 2019 as Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q (File No. 000-26727), which is
incorporated herein by reference.

Form of Stock Options Agreement for the BioMarin Pharmaceutical Inc. 2017 Equity Incentive Plan, previously filed with the SEC on
June 12, 2017 as Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 000-26727), which is incorporated herein by
reference.

Form of Agreement Regarding Restricted Stock Units for the BioMarin Pharmaceutical Inc. 2017 Equity Incentive Plan, previously
filed with the SEC on June 12, 2017 as Exhibit 10.3 to the Company’s Current Report on Form 8-K (File No. 000-26727), which is
incorporated herein by reference.

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Table of Contents

10.34†

10.35†

10.36†

10.37

10.38

21.1*

23.1*

24.1*

31.1*

31.2*

32.1*

101.INS

101.SCH

101.CAL

101.DEF

101.LAB

101.PRE

104

Form of Agreement Regarding Performance Stock Award in the Form of Restricted Stock Units for the BioMarin Pharmaceutical Inc.
2017 Equity Incentive Plan, previously filed with the SEC on June 12, 2017 as Exhibit 10.4 to the Company’s Current Report on Form
8-K (File No. 000-26727), which is incorporated herein by reference.

BioMarin Pharmaceutical Inc. Summary of Independent Director Compensation, previously filed with the SEC on October 31, 2017 as
Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (File No. 000-26727), which is incorporated herein by reference.

BioMarin Pharmaceutical Inc. Summary of Independent Director Compensation, previously filed with the SEC on November 4, 2019
as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (File No. 000-26727), which is incorporated herein by reference.

Credit Agreement by and among BioMarin Pharmaceutical Inc., as the Borrower, Bank of America, N.A., as Administrative Agent,
Swing Line Lender and a Lender, and Citibank N.A. as L/C Issuer, and the Lenders party thereto, dated as of October 19, 2018,
previously filed with the SEC on February 28, 2019 as Exhibit 10.48 to the Company’s Annual Report on Form 10-K (File No. 000-
26727), which is incorporated by reference herein.

First Amendment to the Amended and Restated BioMarin Pharmaceutical Inc. Nonqualified Deferred Compensation Plan, as adopted
June 4, 2019, previously filed with the SEC on August 2, 2019 as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (File
No. 000-26727), which is incorporated herein by reference.

Subsidiaries of BioMarin Pharmaceutical Inc.

Consent of KPMG LLP, Independent Registered Public Accounting Firm for BioMarin Pharmaceutical Inc.

Power of Attorney (Included in Signature Page to this Report)

Certification of Chief Executive Officer pursuant to Rules 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as amended.

Certification of Acting Chief Financial Officer pursuant to Rules 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as
amended.

Certification of Chief Executive Officer and Acting Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002. This Certification accompanies this report and shall not, except to the extent required
by the Sarbanes-Oxley Act of 2002, be deemed filed for purposes of §18 of the Securities Exchange Act of 1934, as amended.

XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded
within the Inline XBRL document.

Inline XBRL Taxonomy Extension Schema Document

Inline XBRL Taxonomy Extension Calculation Document

Inline XBRL Taxonomy Extension Definition Linkbase

Inline XBRL Taxonomy Extension Labels Linkbase Document

Inline XBRL Taxonomy Extension Presentation Link Document

XBRL tags for the cover page from the Company’s Quarterly Report on Form 10-K for the year ended December 31, 2019, are
embedded within the Inline XBRL document.

* Filed herewith
† Management contract or compensatory plan or arrangement

Attached as Exhibit 101 to this report are documents formatted in XBRL (Extensible Business Reporting Language): (i) Consolidated Balance Sheets

as of December 31, 2019 and December 31, 2018, (ii) Consolidated Statements of Operations for the years ended December 31, 2019, 2018 and 2017,
(iii) Consolidated Statement of Comprehensive Loss for the years ended December 31, 2019, 2018 and 2017, (iv) Consolidated Statement of Stockholders’
Equity for the years ended December 31, 2019, 2018 and 2017, (v) Consolidated Statements of Cash Flows for the years ended December 31, 2019, 2018
and 2017, and (vi) Notes to Consolidated Financial Statements.

Item 16. Form 10-K Summary

None.

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Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on

its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Dated: February 27, 2020

By:

/S/ BRIAN R. MUELLER

BIOMARIN PHARMACEUTICAL INC.

Brian R. Mueller
Senior Vice President, Finance and 
Acting Chief Financial Officer

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POWER OF ATTORNEY

Exhibit 24.1

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Jean-Jacques Bienaimé
and Brian R. Mueller, his or her attorney-in-fact, with the power of substitution, for him or her in any and all capacities, to sign any amendments to the Report
on Form 10-K and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby
ratifying and confirming all that each of said attorneys-in-fact, or his substitute or substitutes, may do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the

registrant and in the capacities and on the dates indicated:

Signature

/S/ JEAN-JACQUES BIENAIMÉ

Jean-Jacques Bienaimé

/S/ BRIAN R. MUELLER

Brian R. Mueller

Title

Chairman and Chief Executive Officer
(Principal Executive Officer)

Senior Vice President, Finance and Acting
Chief Financial Officer (Principal Financial and Accounting
Officer)

/S/ ELIZABETH MCKEE ANDERSON

Director

Elizabeth McKee Anderson

/S/ WILLARD H. DERE, M.D.

Willard H. Dere, M.D.

/S/ MICHAEL G. GREY

Michael G. Grey

/S/ ELAINE J. HERON

Elaine J. Heron

/S/ ROBERT J. HOMBACH

Robert J. Hombach

V. Bryan Lawlis

/S/ ALAN J. LEWIS

Alan J. Lewis

Director

Director

Director

Director

Director

Director

Date

February 27, 2020

February 27, 2020

February 27, 2020

February 27, 2020

February 27, 2020

February 27, 2020

February 27, 2020

February 27, 2020

February 27, 2020

/S/ RICHARD A. MEIER

Lead Independent Director

February 27, 2020

Richard A. Meier

/S/ DAVID PYOTT

David Pyott

/S/ DENNIS J. SLAMON

Dennis J. Slamon

Director

Director

83

February 27, 2020

February 27, 2020

Table of Contents

BIOMARIN PHARMACEUTICAL INC.
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Reports of Independent Registered Public Accounting Firm
Consolidated Financial Statements as of December 31, 2019 and 2018, and for the three years ended December 31, 2019:

Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Loss
Consolidated Statements of Stockholders’ Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements

PAGE

85

88
89
90
91
92
93

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Report of Independent Registered Public Accounting Firm

To the Stockholders and the Board of Directors
BioMarin Pharmaceutical Inc.:

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of BioMarin Pharmaceutical Inc. and subsidiaries (the Company) as of December 31, 2019
and 2018, the related consolidated statements of operations, comprehensive loss, stockholders’ equity, and cash flows for each of the years in the three-year
period ended December 31, 2019 and the related notes (collectively, the consolidated financial statements). In our opinion, the consolidated financial
statements present fairly, in all material respects, the financial position of the Company as of December 31, 2019 and 2018, and the results of its operations
and its cash flows for each of the years in the three-year period ended December 31, 2019, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal
control over financial reporting as of December 31, 2019, based on criteria established in Internal Control – Integrated Framework (2013) issued by the
Committee of Sponsoring Organizations of the Treadway Commission, and our report dated February 27, 2020 expressed an unqualified opinion on the
effectiveness of the Company’s internal control over financial reporting.

Change in Accounting Principle

As discussed in Note 4 to the consolidated financial statements, the Company has changed its method of accounting for Leases as of January 1, 2019, due to
the adoption of Accounting Standards Codification 842 (ASC 842), Leases.

As discussed in Note 3 to the consolidated financial statements, the Company has changed its method of accounting for Revenue as of January 1, 2018, due
to the adoption of Accounting Standards Codification 606 (ASC 606), Revenue from Contracts with Customers.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these
consolidated financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with
respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange
Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable
assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing
procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that
respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial
statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the
overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated
or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the consolidated financial statements
and (2) involved our especially challenging, subjective, or complex judgment. The communication of a critical audit matter does not alter in any way our opinion
on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on
the critical audit matter or on the accounts or disclosures to which it relates.

Evaluation of variable consideration relating to Aldurazyme net product revenue

As described in Notes 3 and 15 to the consolidated financial statements, during the year ended December 31, 2019 the Company recognized $98 million in
Aldurazyme net product revenue. Under its arrangement with Genzyme Corporation (Genzyme), a wholly owned subsidiary of Sanofi, the Company receives
payments ranging from 39.5% to 50% on worldwide net Aldurazyme sales by Genzyme, depending on Genzyme’s sales volume. The Company estimates this
variable consideration based on the amount that it expects to be entitled to from Genzyme’s sales of Aldurazyme. The Company recognizes this revenue upon
satisfying the product

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Report of Independent Registered Public Accounting Firm

performance obligation, which is when the product is shipped to Genzyme and all required quality control certificates are complete.

We identified the evaluation of variable consideration relating to Aldurazyme net product revenue, including the evaluation of the need for constraint on variable
consideration, as a critical audit matter. Evaluating the key assumptions of forecasted Genzyme’s sales volume and average price per vial involved a high
degree of subjective auditor judgment due to the nature of available supporting evidence being limited to historical sales and price data related to these
assumptions. Changes in these key assumptions could have a significant impact on Aldurazyme net product revenue.

The primary procedures we performed to address this critical audit matter included the following. We tested certain internal controls over the Company’s
process for recognizing Aldurazyme net product revenue. This included testing controls over forecasting Genzyme’s sales volume and average price per vial
used to estimate variable consideration and evaluate the need for constraint on variable consideration. We evaluated the Company’s ability to estimate the
variable consideration by comparing historical estimates of sales volume and price per vial to actual sales volume and price per vial of product sold by
Genzyme. We also compared the Company’s current-period forecasts of future Genzyme sales volume and average price per vial to Genzyme’s historical
sales volume and price per vial. We performed a sensitivity analysis to assess the impact of changes in these key assumptions on the Company’s estimate of
variable consideration.

/s/ KPMG LLP

We have served as the Company’s auditor since 2002.

San Francisco, California
February 27, 2020

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Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors
BioMarin Pharmaceutical Inc.:

Opinion on Internal Control Over Financial Reporting

We have audited BioMarin Pharmaceutical Inc.’s and subsidiaries’ (the Company) internal control over financial reporting as of December 31, 2019, based on
criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. In
our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2019, based on criteria
established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated
balance sheets of the Company as of December 31, 2019 and 2018, the related consolidated statements of operations, comprehensive loss, stockholders’
equity, and cash flows for each of the years in the three-year period ended December 31, 2019, and the related notes (collectively, the consolidated financial
statements), and our report February 27, 2020 expressed an unqualified opinion on those consolidated financial statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of
internal control over financial reporting, included in the accompanying Management’s Annual Report on Internal Control Over Financial Reporting in Item 9A.
Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm
registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the
applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable
assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit of internal control over financial
reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and
evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as
we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and
the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over
financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect
the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit
preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being
made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or
timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

/s/ KPMG LLP

San Francisco, California
February 27, 2020

87

BIOMARIN PHARMACEUTICAL INC.

CONSOLIDATED BALANCE SHEETS

December 31, 2019 and 2018

(In thousands of U.S. Dollars, except share and per share amounts)

ASSETS

Table of Contents

Current assets:

Cash and cash equivalents

Short-term investments
Accounts receivable, net
Inventory

Other current assets

Total current assets

Noncurrent assets:

Long-term investments

Property, plant and equipment, net
Intangible assets, net

Goodwill
Deferred tax assets
Other assets

Total assets

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:

Accounts payable and accrued liabilities
Short-term convertible debt, net
Short-term contingent consideration

Total current liabilities

Noncurrent liabilities:

Long-term convertible debt, net

Long-term contingent consideration
Other long-term liabilities

Total liabilities
Stockholders’ equity:

Common stock, $0.001 par value: 500,000,000 shares authorized;
   179,838,114 and 178,252,954 shares issued and outstanding, respectively.

Additional paid-in capital
Company common stock held by Nonqualified Deferred Compensation Plan (the NQDC)
Accumulated other comprehensive income

Accumulated deficit

Total stockholders’ equity

Total liabilities and stockholders’ equity

December 31,
2019

December 31,
2018

$

437,446    $

316,361   
377,404   
680,275   

130,657   

493,982   

590,326   
342,633   
530,871   

98,403   

1,942,143   

2,056,215   

$

$

411,978   

1,010,868   
456,580   

197,039   
549,422   
122,009   

235,864   

948,682   
491,808   

197,039   
460,952   
36,568   

4,690,039    $

4,427,128   

570,621    $
361,882   
—   

932,503   

486,238   

50,793   
98,124   

437,290   
—   
85,951   

523,241   

830,417   

46,883   
58,647   

1,567,658   

1,459,188   

180   

4,832,707   
(9,961)  
20,164   

(1,720,709)  

3,122,381   

178   

4,669,926   
(13,301)  
5,271   

(1,694,134)  

2,967,940   

$

4,690,039    $

4,427,128   

The accompanying notes are an integral part of these Consolidated Financial Statements.

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BIOMARIN PHARMACEUTICAL INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

Years Ended December 31, 2019, 2018 and 2017

(In thousands of U.S. Dollars, except per share amounts)

REVENUES:

Net product revenues
Royalty and other revenues

Total revenues

OPERATING EXPENSES:

Cost of sales

Research and development
Selling, general and administrative
Intangible asset amortization and contingent consideration

Gain on sale of intangible assets

Total operating expenses

LOSS FROM OPERATIONS

Equity in the loss of BioMarin/Genzyme LLC
Interest income
Interest expense

Other income, net

LOSS BEFORE INCOME TAXES
Provision for (benefit from) income taxes

NET LOSS

NET LOSS PER SHARE, BASIC

NET LOSS PER SHARE, DILUTED

Weighted average common shares outstanding, basic

Weighted average common shares outstanding, diluted

2019

2018

2017

$

1,661,043    $
43,005   

1,470,356    $
20,856   

1,704,048   

1,491,212   

359,466   

715,007   
680,924   
74,108   

(25,000)  

1,804,505   

(100,457)  

(587)  
22,748   
(23,460)  

6,945   

(94,811)  
(70,963)  

315,264   

696,328   
604,353   
48,791   

(50,000)  

1,614,736   

(123,524)  

(553)  
22,831   
(43,664)  

2,205   

(142,705)  
(65,494)  

1,270,445   
43,201   

1,313,646   

241,786   

610,753   
554,336   
46,471   

(125,000)  

1,328,346   

(14,700)  

(1,291)  
14,853   
(42,707)  

7,970   

(35,875)  
81,167   

$

$

$

(23,848)   $

(77,211)   $

(117,042)  

(0.13)   $

(0.13)   $

179,039   

179,039   

(0.44)   $

(0.44)   $

177,061   

177,268   

(0.67)  

(0.67)  

174,427   

174,427   

The accompanying notes are an integral part of these Consolidated Financial Statements.

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

Years Ended December 31, 2019, 2018 and 2017

(In thousands of U.S. Dollars)

NET LOSS
OTHER COMPREHENSIVE INCOME (LOSS):

Available-for-sale debt securities:

Unrealized holding gain (loss) arising during the period, net
   of tax impact of $(1,640), $(413) and $272, respectively.

Less: reclassifications to net loss, net of tax impact of
   $0, $0 and $(1,191), respectively.

Net change in unrealized holding gain (loss), net of tax

Cash flow hedges:

2019

2018

2017

$

(23,848)   $

(77,211)   $

(117,042)  

5,482   

—   

5,482   

1,391   

—   

1,391   

(483)  

2,061   

(2,544)  

Unrealized holding gain (loss) arising during the period, net of tax impact of $0 for all

periods presented.

25,266   

25,386   

(38,351)  

Less: reclassifications to net loss, net of tax impact of $0 for all 
periods presented.

Net change in unrealized holding gain (loss), net of tax

Other

OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX

COMPREHENSIVE LOSS

15,853   

9,413   

(2)  

14,893   

(2,047)  

27,433   

(6)  

28,818   

(5,113)  

(33,238)  

5   

(35,777)  

$

(8,955)   $

(48,393)   $

(152,819)  

The accompanying notes are an integral part of these Consolidated Financial Statements.

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BIOMARIN PHARMACEUTICAL INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

Years Ended December 31, 2019, 2018 and 2017

(In thousands of U.S. Dollars and share amounts in thousands)

Shares of Common Stock, beginning balances
Issuances under equity incentive plans
Conversion of convertible notes, net

Shares of Common Stock, ending balances

2019

2018

2017

178,253   
1,585   
—   

179,838   

175,844   
2,314   
95   

178,253   

172,648   
2,092   
1,104   

175,844   

Total stockholders' equity, beginning balances

$

2,967,940    $

2,808,663    $

2,766,275   

Common stock:
Beginning balances

Issuances under equity incentive plans, net of tax
Conversion of convertible notes, net

Ending balances
Additional paid-in capital:

Beginning balances

Issuances under equity incentive plans, net of tax
Stock-based compensation

Conversion of convertible notes, net
Common stock held by the NQDC
Accounting impact of NQDC Plan change (See Note 17)

Ending balances

Company common stock held by the NQDC:
Beginning balances

Common stock held by the NQDC
Accounting impact of NQDC Plan change (See Note 17)

Ending balances
Accumulated other comprehensive income (loss):

Beginning balances

Impact of change in accounting principle
Other comprehensive income (loss)

Ending balances

Accumulated Deficit:
Beginning balances

Impact of changes in accounting principles
Net loss

Ending balances

Total stockholders' equity, ending balances

178   

2   
—   

180   

4,669,926   
(11,071)  
163,891   

—   
(692)  
10,653   

176   

2   
—   

178   

4,483,220   
31,583   
155,139   

(16)  
—   
—   

173   

2   
1   

176   

4,288,113   
27,350   
145,281   

22,476   
—   
—   

4,832,707   

4,669,926   

4,483,220   

(13,301)  

692   
2,648   

(9,961)  

5,271   
—   
14,893   

20,164   

(14,224)  

(14,321)  

923   
—   

97   
—   

(13,301)  

(14,224)  

(22,961)  
(586)  
28,818   

5,271   

12,816   
—   
(35,777)  

(22,961)  

(1,694,134)  

(1,637,548)  

(1,520,506)  

(2,727)  
(23,848)  

20,625   
(77,211)  

—   
(117,042)  

(1,720,709)  

(1,694,134)  

(1,637,548)  

$

3,122,381    $

2,967,940    $

2,808,663   

The accompanying notes are an integral part of these Consolidated Financial Statements.

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BIOMARIN PHARMACEUTICAL INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
Years Ended December 31, 2019, 2018 and 2017
(In thousands of U.S. dollars)

CASH FLOWS FROM OPERATING ACTIVITIES:

Net loss

Adjustments to reconcile net loss to net cash used in operating activities:

Depreciation and amortization

Non-cash interest expense

Amortization of premium on investments (accretion of discount)

Stock-based compensation expense

Gain on sale of intangible assets

Gain on sale of equity investment

Deferred income taxes

Unrealized foreign exchange loss (gain)

Non-cash changes in the fair value of contingent consideration

Other

Changes in operating assets and liabilities:

Accounts receivable, net

Inventory

Other current assets

Other assets

Accounts payable and accrued liabilities

Other long-term liabilities

Net cash provided by (used in) operating activities

CASH FLOWS FROM INVESTING ACTIVITIES:

Purchases of property, plant and equipment

Maturities and sales of investments

Purchase of available-for-sale debt securities

Proceeds from sale of intangible asset

Purchase of intangible assets

Other

Net cash provided by (used in) investing activities

CASH FLOWS FROM FINANCING ACTIVITIES:

Proceeds from exercises of awards under equity incentive plans

Taxes paid related to net share settlement of equity awards

Proceeds from convertible senior subordinated note offering, net

Repayments of convertible debt

Payment of contingent consideration

Principal repayments of financing leases

Net cash provided by (used in) financing activities

Effect of exchange rate changes on cash

NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS

Cash and cash equivalents:

Beginning of period

End of period

SUPPLEMENTAL CASH FLOW DISCLOSURES:

Cash paid for interest, net of interest capitalized into fixed assets

Cash paid for income taxes
SUPPLEMENTAL CASH FLOW DISCLOSURES FOR NON-CASH INVESTING AND FINANCING

ACTIVITIES:

Increase (decrease) in accounts payable and accrued liabilities related to fixed assets
Conversion of convertible debt, net

2019

2018

2017

$

(23,848)   $

(77,211)   $

(117,042)  

105,300   

13,960   

(2,000)  

159,865   

(25,000)  

(714)  

(82,760)  

1,025   

5,205   

(1,679)  

(37,852)  

(107,554)  

(27,008)  

(8,895)  

77,089   

3,128   

48,262   

(145,026)  

740,211   

(632,023)  

25,000   

(18,380)  

(808)  

(31,026)  

31,611   

(42,680)  

—   

—   

(58,518)  

(5,087)  

(74,674)  

902   

(56,536)  

95,671   

31,186   

358   

148,819   

(50,000)  

—   

(68,378)  

(17,766)  

9,296   

(2,347)  

(54,274)  

(23,747)  

(17,767)  

(935)  

38,389   

8,914   

20,208   

(144,620)  

993,734   

(634,753)  

50,000   

—   

(10)  

264,351   

67,488   

(35,919)  

—   

(374,953)  

(44,623)  

—   

(388,007)  

(598)  

(104,046)  

493,982   

598,028   

437,446    $

493,982    $

8,552    $

9,726    $

11,623    $

16,676    $

87,861   

32,300   

3,077   

140,263   

(125,000)  

(3,252)  

44,464   

6,258   

10,342   

5,935   

(25,256)  

(96,890)  

(20,687)  

(2,439)  

45,517   

5,792   

(8,757)  

(199,219)  

425,960   

(655,447)  

125,000   

—   

(1,753)  

(305,459)  

60,859   

(33,507)  

481,713   

(26)  

(1,894)  

—   

507,145   

(3,231)  

189,698   

408,330   

598,028   

8,544   

23,895   

7,589    $

—    $

(1,206)   $

—    $

(25,786)  

22,477   

$

$

$

$

$

The accompanying notes are an integral part of these Consolidated Financial Statements.

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

(1) NATURE OF OPERATIONS AND BUSINESS RISKS

BioMarin Pharmaceutical Inc. (the Company or BioMarin) is a global biotechnology company that develops and commercializes innovative therapies
for people with serious and life-threatening rare diseases and medical conditions. The Company selects product candidates for diseases and conditions that
represent a significant unmet medical need, have well-understood biology and provide an opportunity to be first-to-market or offer a significant benefit over
existing products. The Company’s therapy portfolio consists of several commercial products and multiple clinical and preclinical product candidates.

The Company expects to continue to finance future cash needs that exceed its operating activities primarily through its current cash, cash equivalents
and investments and through proceeds from debt or equity offerings, commercial borrowing, or through collaborative agreements with corporate partners. If the
Company elects to increase its spending on development programs significantly above current long-term plans or enters into potential licenses and other
acquisitions of complementary technologies, products or companies, the Company may need additional capital.

The Company is subject to a number of risks, including: the financial performance of its commercial products; the potential need for additional

financing; the Company’s ability to successfully commercialize its approved products; the uncertainty of the Company’s research and development efforts
resulting in future successful commercial products; the Company’s ability to successfully obtain regulatory approval for new products; significant competition
from larger organizations; reliance on the proprietary technology of others; dependence on key personnel; uncertain patent protection; dependence on
corporate partners and collaborators; and possible restrictions on reimbursement from governmental agencies and healthcare organizations, as well as other
changes in the healthcare industry.

(2) BASIS OF PRESENTATION

Basis of Presentation

These Consolidated Financial Statements have been prepared pursuant to United States generally accepted accounting principles (U.S. GAAP) and
the rules and regulations of the Securities and Exchange Commission (the SEC) for Annual Reports on Form 10-K and include the accounts of BioMarin and
its wholly owned subsidiaries. All intercompany transactions have been eliminated. Certain amounts in these notes to the Company’s Consolidated Financial
Statements have been reclassified to conform to the current period presentation. Management performed an evaluation of the Company’s activities through the
date of filing of this Annual Report on Form 10-K, and has concluded that, other than the event discussed in Note 22 to these Consolidated Financial
Statements, there were no subsequent events or transactions that occurred subsequent to the balance sheet date and prior to the filing this Annual Report on
Form 10-K that would require recognition or disclosure in the Consolidated Financial Statements.

Effective January 1, 2019, the Company adopted Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 842,

Leases (ASC Topic 842) using the modified retrospective method for all lease arrangements at the beginning of the period of adoption. Amounts reported for
2019 were presented under ASC Topic 842, whereas prior period amounts were not adjusted and continue to be presented in accordance with the Company’s
historical accounting under ASC Topic 840, Leases. See Notes 4 and 12 to these Consolidated Financial Statements for additional discussion of the adoption
of ASC Topic 842 and required disclosures.

On January 1, 2019, the Company adopted Accounting Standards Update (ASU) No. 2017-12, Derivatives and Hedging (Topic 815): Targeted

Improvements to Accounting for Hedging Activities (ASU 2017-12), using the modified retrospective method as discussed in Note 3 - Significant Accounting
Policies. This ASU provides new guidance about income statement classification and eliminates the requirement to separately measure and report hedge
ineffectiveness. Results for 2019 were presented under ASU 2017-12, whereas prior period amounts were not adjusted and continue to be presented in
accordance with the Company’s historical accounting. See Note 4 for additional discussion of the adoption and Note 11 to these Consolidated Financial
Statements for additional disclosures required by ASU 2017-12.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make judgments, estimates and assumptions that
affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the dates of the financial statements, and the reported
amounts of revenues and expenses during the reporting period. Although these estimates are based on management’s best knowledge of current events and
actions that the Company may undertake in the future, actual results may be different from those estimates.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

(3) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Cash and Cash Equivalents

The Company treats highly liquid investments, readily convertible to cash, with original maturities of three months or less on the purchase date as

cash equivalents.

Marketable and Non-Marketable Securities

Marketable Securities

The Company determines the appropriate classification of its investments in debt and equity securities at the time of purchase and reevaluates such

designations at each reporting period. The Company classifies its debt and equity securities with original maturities greater than three months when purchased
as either short-term or long-term investments based on each instrument’s underlying contractual maturity date and its availability for use in current operations.
Available-for-sale debt securities are recorded at fair market value with unrealized gains and losses included in Accumulated Other Comprehensive Income
(AOCI) on the Company’s Consolidated Balance Sheets, with the exception of unrealized losses believed to be other-than-temporary, which, if any, are
reported in Other Income, Net in the current period. Impairment assessments are made at the individual security level each reporting period. When the fair
value of an investment is less than its cost at the balance sheet date, a determination is made as to whether the impairment is other-than-temporary and, if it is
other-than-temporary, an impairment loss is recognized in earnings equal to the difference between the investment’s amortized cost and fair value at such date.

Non-Marketable Equity Securities

The Company records investments in equity securities, other than equity method investments, at fair market value, if fair value is readily determinable.

Equity securities with no readily determinable fair values are recorded using the measurement alternative of cost adjusted for observable price changes in
orderly transactions for identical or similar investments of the same issuer less impairment, if any. Investments in equity securities are recorded in Other Assets
on the Company's Consolidated Balance Sheets. Unrealized gains and losses are reported in Other Income, Net. The Company regularly reviews its non-
marketable equity securities for indicators of impairment.

Inventory

The Company values inventory at the lower of cost and net realizable value and determines the cost of inventory using the average-cost method. The

Company analyzes its inventory levels quarterly and adjusts inventory to its net realizable value, if required, for obsolescence, for a cost basis in excess of its
expected net realizable value or for quantities in excess of expected requirements. If the Company determines cost exceeds its net realizable value, the
resulting adjustments are recognized as Cost of Sales in the Consolidated Statements of Operations.

When future commercialization is considered probable and the future economic benefit is expected to be realized, based on management’s judgment,

the Company capitalizes pre-launch or pre-qualification manufacturing costs prior to regulatory approval. A number of factors are taken into consideration,
including the current status in the regulatory approval process, pivotal clinical trial results for the underlying product candidate, results from meetings with the
relevant regulatory authorities prior to the filing of regulatory applications, historical experience, as well as potential impediments to the approval process such
as product safety or efficacy, commercialization and marketplace trends.

Property, Plant and Equipment

Property, plant and equipment are stated at historical cost net of accumulated depreciation. Depreciation is computed using the straight-line method

over the related estimated useful lives, as presented in the table below. Significant additions and improvements are capitalized, whereas repairs and
maintenance are expensed as incurred. Depreciation of property, plant and equipment are included in Cost of Sales, Research and Development (R&D) and
Selling, General and Administrative (SG&A), as appropriate, in the Consolidated Statements of Operations. Property and equipment purchased for specific
R&D projects with no alternative future uses are expensed as incurred and recorded to R&D in the Consolidated Statements of Operations.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Leasehold improvements

Building and improvements
Manufacturing and laboratory equipment
Computer hardware and software

Office furniture and equipment
Vehicles

Land improvements
Land
Construction-in-progress

Shorter of life of asset or lease term

20 to 50 years
5 to 15 years
3 to 5 years

5 years
5 years

10 years
Not applicable
Not applicable

Leases

The Company determines if an arrangement is a lease at contract inception. For leases where the Company is the lessee, right-of-use (ROU) assets

represent the Company’s right to use the underlying asset for the term of the lease and the lease liabilities represent the lease payment obligation. ROU assets
and lease liabilities are recognized at the lease commencement date based on the present value of the future lease payments over the lease term. The
Company uses its incremental borrowing rate based on the information available at the commencement date of the underlying lease arrangement to determine
the present value of lease payments. The ROU asset also includes any prepaid lease payments and any lease incentives received. The lease term to calculate
the ROU asset and related lease liability includes options to extend or terminate the lease when it is reasonably certain that the Company will exercise the
option. The Company’s lease agreements generally do not contain any material variable lease payments, residual value guarantees or restrictive covenants.

Lease expense for operating leases is recognized on a straight-line basis over the lease term as an operating expense while expense for financing

leases is recognized as depreciation expense and interest expense using the accelerated interest method of recognition. When an arrangement requires
payments for lease and non-lease components, the Company has elected to account for lease and non-lease components separately. Lease expense for
leases with a term of twelve months or less is recognized on a straight-line basis and are not included in the recognized ROU assets and lease liabilities.

Goodwill and Intangible Assets

The Company records goodwill in a business combination when the total consideration exceeds the fair value of the assets acquired. Intangible

assets with indefinite useful lives are related to purchased in-process research and development (IPR&D) projects and are measured at their respective fair
values as of the acquisition date. Intangible assets related to IPR&D projects are considered to be indefinite-lived until the completion or abandonment of the
associated R&D efforts. If and when development is complete, which generally occurs if and when regulatory approval to market a product is obtained, the
associated assets are considered finite-lived and are amortized using the straight-line method based on their respective estimated useful lives at that point in
time. The amortization of these intangible assets is included in Intangible Asset Amortization and Contingent Consideration in the Consolidated Statements of
Operations.

Impairment

The Company assesses its goodwill and indefinite-lived intangible assets for impairment annually in the fourth quarter, or more frequently as

warranted by events or changes in circumstances that indicate that the carrying amount may not be recoverable.

Goodwill is assessed for impairment by comparing the fair value of the Company’s reporting unit with its carrying amount. If the carrying value of the

reporting unit exceeds its fair value, an impairment loss equal to the difference would be recorded. No impairment charges were recorded in the periods
presented.

Indefinite-lived intangible assets are assessed for impairment first by performing a qualitative assessment. If the qualitative assessment indicates that

it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount, then the Company will perform a quantitative
assessment and record an impairment loss. Impairment charges that are not material are recorded to Intangible Asset Amortization and Contingent
Consideration in the Consolidated Statements of Operations. No impairment charges were recorded in the periods presented.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Long-lived Asset Impairment

The Company’s long-lived assets consist of property, plant and equipment and finite-lived intangible assets. Should there be an indication of

impairment, the Company tests for recoverability by comparing the estimated undiscounted future cash flows expected to result from the use of the asset or
asset group and its eventual disposition to the carrying amount of the asset or asset group. Any excess of the carrying value of the asset or asset group over
its estimated fair value is recognized as an impairment loss. Impairment charges related to property, plant or equipment that are not material are recorded to
depreciation expense and presented in SG&A in the Consolidated Statements of Operations. Impairment charges related to finite-lived intangible assets that
are not material are recorded to Intangible Asset Amortization and Contingent Consideration in the Consolidated Statements of Operations.

Revenue Recognition

Effective January 1, 2018, the Company adopted the provisions of ASC 606, Revenue from Contracts with Customers (ASC Topic 606) using the

modified retrospective method for all contracts not completed as of the date of adoption. The reported results for 2019 and 2018 reflect the application of ASC
Topic 606 guidance, while the reported results for 2017 were prepared under the guidance of ASC 605, Revenue Recognition.

The Company recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration

which the Company expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that are within the scope
of ASC Topic 606, the Company performs the following five steps:

(i)

(ii)

(iii)

(iv)

(v)

identification of the promised goods or services in the contract;

determination of whether the promised goods or services are performance obligations including whether they are distinct in the context of the
contract;

measurement of the transaction price, including the constraint on variable consideration;

allocation of the transaction price to the performance obligations based on estimated selling prices; and

recognition of revenue when (or as) the Company satisfies each performance obligation. A performance obligation is a promise in a contract
to transfer a distinct good or service to the customer and is the unit of account.

Net Product Revenues

In the U.S., the Company’s commercial products, except for Palynziq and Aldurazyme, are generally sold to specialty pharmacies or end-users, such

as hospitals, which act as retailers. Palynziq is distributed in the U.S. through certain certified specialty pharmacies under the Palynziq Risk Evaluation and
Mitigation Strategy (REMS) and Aldurazyme is marketed world-wide by Sanofi Genzyme (Genzyme). Outside the U.S., the Company’s commercial products
are sold to its authorized distributors or directly to government purchasers or hospitals, which act as the end-users. Revenues from product sales are
recognized when the customer obtains control of the Company’s product, which occurs at a point in time, typically upon shipment to the customer. Amounts
collected from customers and remitted to governmental authorities, which primarily consist of value-added taxes related to product sales in foreign jurisdictions,
are presented on a net basis on the Company’s Consolidated Statements of Operations, in that taxes billed to customers are not included as a component of
Net Product Revenues.

For Aldurazyme revenues, the Company receives a payment ranging from 39.5% to 50% on worldwide net Aldurazyme sales by Genzyme depending

on sales volume, which is included in Net Product Revenues on the Company’s Consolidated Statements of Operations. The Company recognizes its best
estimate of the revenue it expects to earn when the product is released and control is transferred to Genzyme. The Company records Aldurazyme net product
revenues based on the estimated variable consideration payable when the product is sold through by Genzyme. Actual amounts of consideration ultimately
received may differ from the Company’s estimates. Differences between the estimated variable consideration to be received from Genzyme and actual
payments received are not expected to be material. If actual results vary from the Company’s estimates, the Company will make adjustments, which would
affect Net Product Revenues and earnings in the period such variances become known.

Revenue Reserves

Revenues from product sales are recorded at the net sales price (transaction price), which includes estimates of variable consideration for which

reserves are established and which result from government rebates, sales returns, and other incentives that are offered within contracts between the Company
and its customers, such as specialty pharmacies, hospitals, authorized distributors and government purchasers. These reserves are based on the amounts
earned or to be claimed on the related sales and are classified as reductions of accounts receivable (if the amount is payable to the customer) or a current
liability (if the amount

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

is payable to a party other than a customer). Where appropriate, these estimates take into consideration a range of possible outcomes that are probability-
weighted for relevant factors such as the Company’s historical experience, current contractual and statutory requirements, specific known market events and
trends, industry data and forecasted customer buying and payment patterns. Overall, these reserves reflect the Company’s best estimates of the amount of
consideration to which it is entitled based on the terms of the contract. The amount of variable consideration that is included in the transaction price may be
constrained and is included in the net sales price only to the extent that it is probable that a significant reversal in the amount of the cumulative revenue
recognized will not occur in a future period. Actual amounts of consideration ultimately received may differ from the Company’s estimates, however the
Company does not expect any such difference to be material. If actual results in the future vary from the Company’s estimates, the Company will adjust its
estimates, which would affect net product revenue and earnings in the period such variances become known.

Government Rebates: The Company records reserves for rebates payable under Medicaid and other government programs as a reduction of revenue

at the time product revenues are recorded. The Company’s reserve calculations require estimates, including estimates of customer mix, to determine which
sales will be subject to rebates and the amount of such rebates. The Company updates its estimates and assumptions on a quarterly basis and records any
necessary adjustments to its reserves.

Sales Returns: The Company records allowances for product returns, if appropriate, as a reduction of revenue at the time product sales are recorded.
Several factors are considered in determining whether an allowance for product returns is required, including market exclusivity of the products based on their
orphan drug status, the patient population, the customers’ limited return rights and the Company’s historical experience with returns. Because of the pricing of
the Company’s commercial products, the limited number of patients and the customers’ limited return rights, most customers and retailers carry a limited
inventory. The Company relies on historical return rates to estimate a reserve for returns. Based on these factors and the fact that the Company has not
experienced significant product returns to date, return allowances are not material.

Other Incentives: Other incentives include fees paid to the Company’s distributors and discounts for prompt payment. The Company also offers a

branded co-pay assistance program for eligible patients with commercial insurance in the U.S. who are on Brineura, Kuvan or Palynziq therapy. The branded
co-pay assistance programs assist commercially insured patients who have coverage for an eligible BioMarin product and are intended to reduce each
participating patient’s portion of the financial responsibility of the purchase price up to a specified dollar amount of assistance. The Company records fees paid
to distributors, cash discounts and amounts paid under the brand specific co-pay assistance program for each patient as a reduction of revenue.

Royalty and Other Revenues

Royalties: For arrangements that include the receipt of sales-based royalties, including milestone payments based on the level of sales when the

license is deemed to be the predominant item to which the royalties relate, the Company recognizes revenue at the later of (a) when the related sales occur, or
(b) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied).

Licenses of intellectual property: If the license to the Company’s intellectual property is determined to be distinct from the other performance

obligations identified in the arrangement, the Company recognizes revenues from non-refundable, up-front fees allocated to the license when the license is
transferred to the customer and the customer is able to use and benefit from the license. For licenses that are bundled with other promises, the Company uses
judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a
point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees. The
Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.

Milestone payments: At the inception of each arrangement that includes developmental, regulatory or commercial milestone payments, the Company

evaluates whether achieving the milestones is considered probable and estimates the amount to be included in the transaction price using the most likely
amount method. If it is probable that a significant revenue reversal would not occur, the value of the associated milestone (such as a regulatory submission by
the Company) is included in the transaction price. Milestone payments that are not within the control of the Company, such as approvals from regulators or
where attainment of the specified event is dependent on the development activities of a third party, are not considered probable of being achieved until those
approvals are received or the specified event occurs. Revenue is recognized from the satisfaction of performance obligations in the amount billable to the
customer.

Research and Development

R&D costs are generally expensed as incurred. These expenses include contract R&D services provided by third parties, preclinical and clinical

studies, raw materials costs associated with manufacturing clinical product, quality control and assurance,

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

other R&D activities, facilities and regulatory costs and R&D-related personnel costs including salaries, benefits and stock-based compensation. Upfront and
milestone payments made to third parties in connection with licensed intellectual property used in the Company’s development programs are expensed as
incurred up to the point of regulatory approval.

Convertible Debt

For non-conventional convertible debt that may be settled entirely or partially in cash, the Company separately accounts for the liability and equity

components by allocating the proceeds from issuance between the liability component and the embedded conversion option, or equity component. The value
of the equity component is calculated by first measuring the fair value of the liability component, using the interest rate of a similar liability that does not have a
conversion feature, as of the issuance date. The difference between the proceeds from the convertible debt issuance and the amount measured as the liability
component is recorded as the equity component with a corresponding discount recorded on the debt. The liability component is presented net of any discounts
and issuance costs. For conventional convertible debt that may only be settled with common shares, the Company reports debt, net of any discounts or
issuance costs, on the Consolidated Balance Sheets.

The Company recognizes discount accretion and debt issuance cost amortization using the effective interest method and is reported in Interest

Expense on the Consolidated Statements of Operations.

Net Loss Per Common Share

Basic net loss per share is calculated by dividing Net Loss by the weighted average shares of common stock outstanding during the period. Diluted

net loss per share reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into
common stock; however, potential common equivalent shares are excluded if their effect is anti-dilutive.

Stock-Based Compensation

The Company has equity incentive plans under which various types of equity-based awards may be granted to employees. Stock-based
compensation expense is recognized on a straight-line basis over the requisite service period, which is generally the vesting period required to obtain full
vesting, and is classified as Cost of Sales, R&D or SG&A, as appropriate, in the Consolidated Statements of Operations. The Company accounts for forfeitures
as they occur.

Restricted Stock Units

The fair value of restricted stock units (RSUs) with service-based vesting conditions and RSUs with performance conditions is determined to be the

fair market value of the Company’s underlying common stock on the date of grant. The stock-based compensation expense for RSUs with service-based
vesting is recognized over the period during which the vesting restrictions lapse. Stock-based compensation expense for RSUs with performance conditions is
recognized beginning in the period the Company determines it is probable that the performance condition will be achieved. Management expectations related
to the achievement of performance goals associated with RSUs with performance conditions are assessed regularly to determine whether such grants are
expected to vest. The fair value for RSUs with market conditions is estimated using the Monte Carlo valuation model and related stock-based compensation is
recognized on a straight-line basis, unless the required service is not performed, beginning on the grant date.

Stock Options and Purchase Rights

The fair value of each stock option award and purchase rights under the Company’s Employee Stock Purchase Plan (ESPP) are estimated on the
date of grant using the Black-Scholes valuation model and the following assumptions: expected term, expected volatility, risk-free interest rate and expected
dividend yield. The dividend yield reflects that the Company has not paid any cash dividends since inception and does not intend to pay any cash dividends in
the foreseeable future. The expected term of stock options is based on observed historical exercise patterns. In estimating the life of stock options, the
Company has identified two employee groups with distinctly different historical exercise patterns: executive and non-executive. The executive employee group
has a history of holding stock options for longer periods than non-executive employees. The expected term of purchase rights for ESPP is based on each
tranche of an offering period, which is four tranches in a twenty-four-month period.

The determination of the fair value of stock-based payment awards using an option-pricing model is affected by the Company’s stock price and may

use assumptions regarding a number of complex and subjective variables.

Income Taxes

The Company calculates and provides for income taxes in each of the tax jurisdictions in which it operates. Deferred tax

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

assets and liabilities, measured using enacted tax rates, are recognized for the future tax consequences of temporary differences between the tax and financial
statement basis of assets and liabilities. A valuation allowance reduces the deferred tax assets to the amount that is more likely than not to be realized. The
Company establishes liabilities or reduces assets for uncertain tax positions when the Company believes certain tax positions are not more likely than not of
being sustained if challenged. Each quarter, the Company evaluates these uncertain tax positions and adjusts the related tax assets and liabilities in light of
changing facts and circumstances.

The Company uses financial projections to support its net deferred tax assets, which contain significant assumptions and estimates of future
operations. If such assumptions were to differ significantly, it may have a material impact on the Company’s ability to realize its deferred tax assets. At the end
of each period, the Company will reassess the ability to realize its deferred tax benefits. If it is more likely than not that the Company would not realize the
deferred tax benefits, a valuation allowance may need to be established against all or a portion of the deferred tax assets, which will result in a charge to tax
expense.

Foreign Currency

For the Company and its subsidiaries, the functional currency has been determined to be the U.S. Dollar (USD). Assets and liabilities denominated in
foreign currency are remeasured at period-end exchange rates for monetary assets. Non-monetary assets and liabilities denominated in foreign currencies are
remeasured at historical rates. Foreign currency transaction gains and losses resulting from remeasurement are recognized in SG&A in the Consolidated
Statements of Operations.

Derivatives and Hedging Activities

The Company uses forward foreign currency exchange contracts (forward contracts) to hedge certain operational exposures resulting from potential

changes in foreign currency exchange rates. Such exposures result from portions of the Company’s forecasted revenues and operating expenses being
denominated in currencies other than the USD, primarily the Euro. The Company designates certain of these forward contracts as hedging instruments and
also enters into forward contracts that are considered to be economic hedges that are not designated as hedging instruments. Whether designated or
undesignated, these forward contracts protect against the reduction in value of forecasted foreign currency cash flows resulting from product revenues, royalty
revenues, operating expenses and asset or liability positions designated in currencies other than the USD. To receive hedge accounting treatment, cash flow
hedges must be highly effective in offsetting changes to expected future cash flows on hedged transactions. The Company does not hold or issue derivative
instruments for trading or speculative purposes.

The Company accounts for its derivative instruments as either assets or liabilities on the balance sheet and measures them at fair value, which is

estimated using current exchange rates and interest rates and takes into consideration the current creditworthiness of the counterparties or the Company, as
applicable. For derivatives designated as hedging instruments, the entire change in the fair value of qualifying derivative instruments is recorded in AOCI and
amounts deferred in AOCI are reclassified to earnings in the same line item in which the earnings effect of the hedged item is reported. Derivatives not
designated as hedging instruments are adjusted to fair value through earnings in SG&A in the Consolidated Statements of Operations.

Fair Value of Financial Instruments

The Company applies fair value accounting for all financial assets and liabilities and non-financial assets and liabilities that are recognized or
disclosed at fair value in the financial statements on a recurring basis. The Company defines fair value as the price that would be received from selling an asset
or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for
assets and liabilities that are required to be recorded at fair value, the Company considers the principal or most advantageous market in which the Company
would transact and the market-based risk measurements or assumptions that market participants would use to price the asset or liability, such as risks inherent
in valuation techniques, transfer restrictions and credit risk. When estimating fair value, depending on the nature and complexity of the asset or liability, the
Company may use the following techniques:

•

•

Income approach, which is based on the present value of a future stream of net cash flows

Market approach, which is based on market prices and other information from market transactions involving identical or comparable assets or
liabilities.

The Company’s fair value methodologies depend on the following types of inputs:

•

•

Quoted prices for identical assets or liabilities in active markets (Level 1 inputs)

Quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities that are not active,
or inputs other than quoted process that are directly or indirectly observable, or inputs that are derived principally from, or corroborated by,
observable market data by correlation or other means (Level 2 inputs)

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

•

Unobservable inputs that reflect estimates and assumptions (Level 3 inputs)

The Company’s Level 2 instruments are valued using third-party pricing sources. The pricing services utilize industry standard valuation models,

including both income and market-based approaches, for which all significant inputs are observable, either directly or indirectly, to estimate fair value. These
inputs include reported trades of and broker/dealer quotes on the same or similar securities, issuer credit spreads, benchmark securities, prepayment/default
projections based on historical data and other observable inputs. The Company validates the prices provided by its third-party pricing services by
understanding the models used, obtaining market values from other pricing sources, analyzing pricing data in certain instances and confirming those securities
traded in active markets.

The Company’s Level 3 financial assets and liabilities include acquired intangible assets and contingent consideration resulting from business

acquisitions. The estimated fair value of long-lived and indefinite-lived intangible assets and contingent consideration are measured by applying a probability-
based income approach utilizing an appropriate discount rate as of the acquisition date. Key assumptions used by management to estimate the fair value of
contingent consideration include estimated probabilities, the estimated timing of when a milestone may be attained and assumed discount periods and rates.
Changes in the fair value of the contingent consideration can result from changes to one or more inputs, including the estimated probability with respect to
regulatory approval, changes in the assumed timing of when milestones are likely to be achieved and changes in assumed discount periods and rates.
Contingent consideration is remeasured on a recurring basis and resulting changes in the fair value, due to the revision of key assumptions, are recorded in
Intangible Asset Amortization and Contingent Consideration on the Company’s Consolidated Statements of Operations.

The Company’s Level 3 instruments also include assets and liabilities not considered material to the Company that are measured at their respective

estimated fair value, when estimable, on a non-recurring basis.

See Notes 5, 10, 11, 13, 19 and 20 to these Consolidated Financial Statements for further information on the nature of these financial instruments.

Segment Information

The Company currently operates in one segment focused on the development and commercialization of innovative therapies for people with serious

and life-threatening rare diseases and medical conditions. A single management team reports to the chief operating decision maker who comprehensively
manages the entire business. All products are included in one operating segment because the majority of the Company’s products have similar economic and
other characteristics, including the nature of the products and production processes, type of customers, distribution methods and regulatory environment. The
Company is not organized by market and is managed and operated as one business. The Company does not operate any separate lines of business or
separate business entities with respect to its products. Accordingly, the Company does not accumulate discrete financial information with respect to separate
products, other than revenues, cost of sales and certain other operating expenses.

(4) RECENT ACCOUNTING PRONOUNCEMENTS

Accounting Pronouncements Not Yet Adopted

Effective January 1, 2020, the Company will adopt ASU No. 2016-13, Financial Instruments-Credit Losses: Measurement of Credit Losses on
Financial Instruments (ASU 2016-13), as amended, using a modified retrospective approach. The standard amends the guidance for measuring and recording
credit losses on financial assets measured at amortized cost by replacing the incurred-loss model with an expected-loss model. This new standard also
requires that credit losses related to available-for-sale debt securities be recorded as an allowance through net income rather than by reducing the carrying
amount under the current, other-than-temporary impairment model. The Company anticipates no material impact on its Consolidated Financial Statements due
to the nature of the Company’s financial instruments.

Accounting Pronouncements Adopted

Effective January 1, 2019, the Company adopted ASC Topic 842. The amended guidance required balance sheet recognition of lease ROU assets

and liabilities by lessees for leases classified as operating leases, with an option to not recognize lease ROU assets and lease liabilities for leases with a term
of 12 months or less. The amendments also required new disclosures providing additional qualitative and quantitative information about the amounts recorded
in the financial statements. Lessor accounting is largely unchanged. The Company adopted ASC Topic 842 using the modified retrospective method for all
lease arrangements at the beginning of the period of adoption through a cumulative adjustment to Accumulated Deficit. The Company elected to use the
practical expedient allowing the use-of-hindsight and reassessed the lease term for all unexpired leases that commenced before the effective date of ASC
Topic 842. For leases that commenced and expired before the effective date of ASC Topic 842, the Company elected not to reassess the expired leases. The
Company also elected not to include leases with initial

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

terms of twelve months or less in the recognized ROU assets and lease liabilities.

As a result of the cumulative impact of adopting ASC Topic 842, the Company recorded lease ROU assets of $55.9 million and lease liabilities of

$59.0 million as of January 1, 2019, primarily related to real estate and equipment, based on the present value of future lease payments on the date of
adoption. The difference between the ROU assets and lease liabilities was recorded as an adjustment to Accumulated Deficit. See Note 12 to these
Consolidated Financial Statements for disclosures required under ASC Topic 842.

Effective January 1, 2019, the Company adopted ASU No. 2017-12 using the modified retrospective method. This ASU provides new guidance about
income statement classification and eliminates the requirement to separately measure and report hedge ineffectiveness. The adoption of this ASU did not have
a material impact on the Company’s Consolidated Financial Statements. See Note 11 to these Consolidated Financial Statements for additional disclosures
required by ASU 2017-12.

(5) FINANCIAL INSTRUMENTS

The following tables show the Company’s cash, cash equivalents and available-for-sale securities by significant investment category as of

December 31, 2019 and 2018, respectively:

Amortized Cost

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Aggregate Fair
Value

Cash and Cash
Equivalents

Short-term
Marketable
Securities (1)

Long-term
Marketable
Securities (2)

December 31, 2019

$

259,347    $

—    $

—    $

259,347    $

259,347    $

—    $

—   

173,100   

518,523   

209,633   
549   

901,805   

—   

3,575   

993   
145   

4,713   

—   

(12)  

(67)  
(1)  

(80)  

173,100   

173,100   

—   

—   

522,086   

210,559   
693   

906,438   

—   

233,294   

288,792   

4,999   
—   

178,099   

83,067   
—   

316,361   

122,493   
693   

411,978   

$

1,161,152    $

4,713    $

(80)   $

1,165,785    $

437,446    $

316,361    $

411,978   

Amortized Cost

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Aggregate Fair
Value

Cash and Cash
Equivalents

Short-term
Marketable
Securities (1)

Long-term
Marketable
Securities (2)

December 31, 2018

$

228,809    $

—    $

—    $

228,809    $

228,809    $

—    $

—   

205,736   

564,852   

77,702   

240,436   
5,126   

1,093,852   

—   

214   

—   

144   
139   

497   

—   

205,736   

205,736   

—   

—   

(2,288)  

—   

(697)  
(1)  

562,778   

77,702   

239,883   
5,264   

2,000   

21,964   

31,474   
3,999   

(2,986)  

1,091,363   

265,173   

376,545   

55,738   

156,967   
1,076   

590,326   

184,233   

—   

51,442   
189   

235,864   

$

1,322,661    $

497    $

(2,986)   $

1,320,172    $

493,982    $

590,326    $

235,864   

Level 1:

Cash

Level 2:
Money market
instruments
Corporate debt

securities

U.S. government

agency securities

Foreign and other

Subtotal

Total

Level 1:

Cash

Level 2:
Money market
instruments
Corporate debt

securities

Commercial paper
U.S. government

agency securities

Foreign and other

Subtotal

Total

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

(1)

(2)

The Company’s short-term marketable securities mature in one year or less.

The Company’s long-term marketable securities mature between one and five years.

As of December 31, 2019, some of the Company’s investments were in an unrealized loss position. However, the Company has the ability and intent

to hold all investments that have been in a continuous loss position until maturity or recovery, thus no other-than-temporary impairment was deemed to have
occurred.

See Note 3 to these Consolidated Financial Statements for additional discussion regarding the Company’s fair value measurements.

(6) INTANGIBLE ASSETS

Intangible Assets, Net consisted of the following:

Intangible assets:

Finite-lived intangible assets
Indefinite-lived intangible assets

Gross intangible assets:

Less: Accumulated amortization

Net carrying value

Finite-Lived Intangible Assets

December 31,

2019

2018

$

$

652,734    $

—   

652,734   

(196,154)  

456,580    $

307,995   
326,359   

634,354   

(142,546)  

491,808   

The following table summarizes the carrying value and estimated remaining life of the Company’s finite-lived intangible assets as of December 31,

2019:

Acquired intellectual property
Repurchased royalty rights

Technology transfer
Other

Total

Net Balance

Average Remaining
Life

$

$

406,058   
26,438   

23,078   
1,006   

456,580   

7.8 years
3.9 years

Not applicable (1)
1.2 - 4.6 years

(1)

The technology transfer intangible asset has not yet been placed into service.

As of December 31, 2019, the estimated future amortization expense associated with the Company’s finite-lived intangible assets, exclusive of the

technology transfer asset that has not been placed into service, was as follows:

Fiscal Year

2020

2021
2022
2023

2024
Thereafter

Amount

62,887   

61,963   
61,939   
61,311   

55,036   
130,366   

433,502   

$

$

Indefinite-Lived Intangible Assets

The Company’s indefinite-lived intangible assets were $326.4 million as of December 31, 2018 and consisted of IPR&D related to the Palynziq rights

in Europe. During the second quarter of 2019, these indefinite-lived intangible assets were reclassified

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

to definite-lived as the underlying IPR&D was placed into service upon receiving European regulatory approval for Palynziq. The Company will straight-line the
amortization expense for the underlying IPR&D over its estimated useful life of nine years.

In 2019 and 2018, the Company received $25.0 million and $50.0 million, respectively, due to the achievement by a third party of development and

regulatory milestones and commercial sales milestones related to a previously sold intangible asset, which the Company recorded as a gain on the sale of
intangible assets in the Consolidated Statements of Operations.

In December 2017, the Company sold the Rare Pediatric Disease Priority Review Voucher (PRV) it received from the Food and Drug Administration in

connection with the U.S. approval of Brineura. In exchange for the voucher, the Company received $125.0 million in proceeds from the sale of the PRV, which
was recognized as a gain on the sale of intangible asset as the PRV did not have a carrying value on the Company’s Consolidated Balance Sheet at the time
of sale.

In the fourth quarter of 2017, the Company recognized an impairment charge of $5.8 million related to other acquired IPR&D assets recorded in

Intangible Asset Amortization and Contingent Consideration on the Company's Consolidated Statements of Operations.

(7) PROPERTY, PLANT AND EQUIPMENT

Property, Plant and Equipment, Net, consisted of the following:

Building and improvements
Manufacturing and laboratory equipment
Computer hardware and software

Leasehold improvements
Furniture and equipment

Land improvements
Land
Construction-in-progress

Accumulated depreciation

Total property, plant and equipment, net

December 31,

2019

2018

$

725,906    $
366,951   
167,554   

51,324   
38,569   

7,349   
90,418   
111,897   

1,559,968   

(549,100)  

694,447   
345,947   
157,787   

41,188   
33,234   

6,551   
77,993   
64,170   

1,421,317   

(472,635)  

$

1,010,868    $

948,682   

The construction-in-process balance primarily includes costs related to the Company’s significant in-process projects at its facilities in Marin County,

California, and in Shanbally, Cork, Ireland.

Depreciation for the years ended December 31, 2019, 2018 and 2017 was $89.3 million, $90.4 million and $75.8 million, respectively, of which $37.5

million, $25.2 million and $24.1 million was capitalized into inventory, respectively.

(8) INVENTORY

Inventory consisted of the following:

Raw materials

Work-in-process
Finished goods

Total inventory

December 31,

2019

2018

$

$

74,442    $

349,978   
255,855   

680,275    $

74,616   

231,064   
225,191   

530,871   

103

Inventory as of December 31, 2019, included manufacturing-related costs for the commercial production of valoctocogene roxaparvovec inventory

totaling $29.2 million. Valoctocogene roxaparvovec is an investigational gene therapy product candidate for the treatment of severe hemophilia A. The
Company must receive marketing approval from the applicable regulators before the valoctocogene roxaparvovec inventory can be sold commercially. The
Company believes that all material uncertainties related to the ultimate regulatory approval of valoctocogene roxaparvovec for commercial sale have been
significantly reduced. A number of factors were taken into consideration, including the current status in the drug development process, pivotal clinical trial
results for the underlying product candidate, results from meetings with the relevant regulatory authorities prior to the filing of regulatory applications, historical
experience, as well as potential impediments to the approval process such as product safety or efficacy, as well as commercialization and marketplace trends.
If regulatory approval is not obtained, the manufacturing-related costs for the commercial production of valoctocogene roxaparvovec will be expensed to R&D.

(9) SUPPLEMENTAL BALANCE SHEET INFORMATION

Accounts Payable and Accrued Liabilities consisted of the following:

Accounts payable and accrued operating expenses
Accrued compensation expense

Accrued rebates payable
Accrued royalties payable
Deferred revenue

Value added taxes payable
Forward foreign currency exchange contracts

Lease liability
Other

December 31,

2019

2018

$

240,981    $
192,467   

57,163   
30,797   
13,037   

8,395   
10,448   

10,700   
6,633   

207,620   
149,937   

43,116   
19,977   
1,467   

7,785   
4,178   

—   
3,210   

Total accounts payable and accrued liabilities

$

570,621    $

437,290   

The roll forward of significant estimated accrued rebates and reserve for cash discounts for the years ended December 31, 2019, 2018 and 2017,

were as follows:

Year ended December 31, 2019:

Accrued rebates
Reserve for cash discounts

Year ended December 31, 2018:

Accrued rebates
Reserve for cash discounts

Year ended December 31, 2017:

Accrued rebates
Reserve for cash discounts

(10) FAIR VALUE MEASUREMENTS

Balance at
Beginning
of Period

Provision for
Current Period
Sales

Payments

Balance at
End of
Period

43,116    $

1,197    $

91,748    $

15,335    $

(77,701)   $

(14,643)   $

57,163   

1,889   

36,472    $

1,055    $

67,843    $

12,474    $

(61,199)   $

(12,332)   $

43,116   

1,197   

34,737    $

888    $

52,596    $

10,672    $

(50,861)   $

(10,505)   $

36,472   

1,055   

$

$

$

$

$

$

The Company measures certain financial assets and liabilities at fair value in accordance with its policy in Note 3 – Significant Accounting Policies to

these Consolidated Financial Statements. The following tables present the classification within

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

fair value hierarchy of financial assets and liabilities not disclosed elsewhere that are remeasured on a recurring basis.

Assets:
Other Current Assets:

NQDC Plan assets

Other Assets:

NQDC Plan assets
Restricted investments (1)
Total other assets

Total assets

Liabilities:
Current Liabilities:

NQDC Plan liability (2)

Other long-term liabilities:

NQDC Plan liability (2)
Contingent consideration

Total other long-term liabilities

Total liabilities

Fair Value Measurements at December 31, 2019

Significant Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Total

$

$

$

$

1,177    $

—    $

1,177   

16,288   

3,168   

19,456   

20,633    $

—   

—   

—   

—    $

16,288   

3,168   

19,456   

20,633   

1,177    $

—    $

1,177   

16,288   

—   

16,288   

17,465    $

—   

50,793   

50,793   

50,793    $

16,288   

50,793   

67,081   

68,258   

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Assets:
Other Current Assets:

NQDC Plan assets
Restricted investments (1)

Total other current assets

Other Assets:

NQDC Plan assets
Restricted investments (1)
Strategic investment (3)
Total other assets

Total assets

Liabilities:
Current Liabilities:

NQDC Plan liability

Contingent consideration
Total current liabilities

Other long-term liabilities:

NQDC Plan liability
Contingent consideration

Total other long-term liabilities

Total liabilities

Fair Value Measurements at December 31, 2018

Quoted Price in
Active Markets
For Identical
Assets
(Level 1)

Significant Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Total

$

$

$

$

—    $

—   

—   

—   

—   

942   

942   

370    $

—    $

9,581   

9,951   

12,828   

2,450   

—   

15,278   

—   

—   

—   

—   

—   

—   

942    $

25,229    $

—    $

55    $

—   

55   

17,598   

—   

17,598   

370    $

—   

370   

12,828   

—   

12,828   

—    $

85,951   

85,951   

—   

46,883   

46,883   

370   

9,581   

9,951   

12,828   

2,450   

942   

16,220   

26,171   

425   

85,951   

86,376   

30,426   

46,883   

77,309   

17,653    $

13,198    $

132,834    $

163,685   

(1)

(2)

(3)

The restricted investments as of December 31, 2019 and 2018 secure the Company’s irrevocable standby letters of credit obtained in connection with
certain commercial agreements.

The Company’s NQDC was amended during the second quarter of 2019, which resulted in a change to the classification of the obligation associated
with the Company's common stock held in the NQDC. The obligation that was previously classified as a liability and recorded at fair value, was
reclassified into equity and recorded at the shares' respective grant date fair values at June 30, 2019. The amendment prohibits the diversification of
Company stock contributed to the plan into other types of investments. The NQDC liabilities classified as Level 2 represent investments held in plan
assets excluding shares of the Company's common stock. See Note 17 to these Consolidated Financial Statements for additional details on the
NQDC.

The Company had investments in marketable equity securities measured using quoted prices in an active market that were considered strategic
investments and were included in Other Assets on the Company's Consolidated Balance Sheets. During the second quarter of 2019, the Company
realized an immaterial gain upon the sale of the shares of the marketable equity securities reported in Other Income, Net.

There were no transfers between levels during the periods presented.

106

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Liabilities measured at fair value using Level 3 inputs primarily consisted of contingent consideration. The following tables represent a roll-forward of

contingent consideration.

Contingent consideration as of December 31, 2018

Milestone payments to Ares Trading S.A. (Merck Serono)

Milestone payments to former LEAD Therapeutics, Inc. shareholders
Changes in the fair value of contingent consideration
Realized foreign exchange gain on settlement of contingent consideration

Foreign exchange remeasurement of Euro denominated contingent
  acquisition consideration

Contingent consideration as of December 31, 2019

$

$

132,834   
(83,472)  

(15,987)  
20,612   
(1,928)  

(1,266)  

50,793   

(11) DERIVATIVE INSTRUMENTS AND HEDGING STRATEGIES

The following table summarizes the Company’s derivatives designated as hedging instruments outstanding as of December 31, 2019 (notional

amounts in millions):

Foreign Exchange Contracts

Number of
Contracts

Aggregate Notional
Amount in
Foreign Currency

Maturity

Australian Dollars – Sell

Canadian Dollars – Sell
Colombian Pesos – Sell
Euros – Purchase

Euros – Sell
Norwegian Krone – Sell

Total

36

56
24
146

385
36

683

13.8   

Jan. 2020 - Dec. 2020

42.5   
99,850.0   
175.4   

617.0   
90.8   

Jan. 2020 - Dec. 2020
Jan. 2020 - Dec. 2020
Jan. 2020 - Dec. 2022

Jan. 2020 - Dec. 2022
Jan. 2020 - Dec. 2020

107

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

The following table summarizes the Company’s derivatives not designated as hedging instruments outstanding as of December 31, 2019 (notional

amounts in millions):

Foreign Exchange Contracts

Number of
Contracts

Aggregate Notional
Amount in
Foreign Currency

Maturity

Brazilian Reais – Purchase

Colombian Pesos – Purchase
Colombian Pesos – Sell

Euros – Purchase
Euros – Sell
Great British Pounds – Purchase

Rubles – Purchase
Rubles – Sell

Total

The fair value carrying amounts of the Company’s derivative instruments were as follows:

Balance Sheet Location
Derivatives designated as hedging instruments:
Asset Derivatives - Level 2 (1)
Other current assets
Other assets
Subtotal

Liability Derivatives - Level 2 (1)
Accounts payable and accrued liabilities

Other long-term liabilities
Subtotal

Derivatives not designated as hedging instruments:
Asset Derivatives - Level 2 (1)
Other current assets

Liability Derivatives - Level 2 (1)
Accounts payable and accrued liabilities

Total Derivatives Assets

Total Derivatives Liabilities

1

4
2

1
1
2

1
2

14

$

$

$

$

$

$

$

$

55.1   

February 2020

28,320.0   
173,000.0   

8.0   
5.0   
21.0   

20.0   
1,360.0   

Jan. 2020 - Feb. 2020
Jan. 2020 - Feb. 2020

February 2020
February 2020
Jan. 2020 - Feb. 2020

February 2020
Jan. 2020 - Feb. 2020

December 31, 2019

December 31, 2018

19,584    $
13,539   

33,123    $

8,184    $

5,493   

13,677    $

12,686   
10,324   

23,010   

4,036   

3,653   

7,689   

469    $

168   

2,264    $

142   

33,592    $

15,941    $

23,178   

7,831   

(1) See Note 3 to these Consolidated Financial Statements for additional information related to the Company’s fair value measurements.

The following tables summarize the impact of gains and losses from the Company's derivatives on its Consolidated Financial Statements for the

period presented.

Derivatives Designated as Cash Flow Hedging Instruments

Amount of Gain (Loss) Recognized in Other Comprehensive Income

December 31, 2019

$

25,266   

108

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Derivatives Designated as Cash Flow Hedging Instruments

December 31, 2019

Cash Flow Hedge Gains
(Losses) 
Reclassified into Earnings

Net product revenues as reported

Operating expenses as reported

$

$

1,661,043    $

1,804,505    $

17,672   

(3,453)  

Derivatives Not Designated as Hedging Instruments

Operating Expenses

Gains (Losses) Recognized
in Earnings

$

(5,259)  

As of December 31, 2019, the Company expects to reclassify unrealized losses of $9.4 million from AOCI to earnings as the forecasted revenue and

operating expense transactions occur over the next twelve months.

The Company is exposed to counterparty credit risk on all of its derivative financial instruments. The Company has established and maintains strict

counterparty credit guidelines and enters into hedges only with financial institutions that are investment grade or better to minimize the Company’s exposure to
potential defaults. The Company does not require collateral to be pledged under these agreements.

(12) LEASES

The following table presents the Company’s ROU assets and lease liabilities as of December 31, 2019:

Lease Classification

Assets:

Operating
Financing

Total ROU assets
Liabilities:
Current:

Operating
Financing
Noncurrent:

Operating
Financing

Total lease liabilities

Classification

Other Assets
Other Assets

Accounts payable and accrued liabilities
Accounts payable and accrued liabilities

Other long-term liabilities
Other long-term liabilities

109

December 31, 2019

$

$

$

$

49,045   
10,389   

59,434   

7,451   
3,249   

44,092   
6,708   

61,500   

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Maturities of lease liabilities as of December 31, 2019 by fiscal year were as follows: 

Maturity of Lease Liabilities

Operating

Financing

Total

2020

2021
2022
2023

2024
Thereafter

Total lease payments
Less: Interest

Present value of lease liabilities

Lease Cost

Operating (1)

Financing:

Amortization
Interest expense

Total lease costs

$

10,019    $

3,705    $

9,081   
8,699   
7,748   

5,916   
22,027   

63,490   
(11,947)  

3,090   
2,346   
1,748   

—   
—   

10,889   
(932)  

$

51,543    $

9,957    $

13,724   

12,171   
11,045   
9,496   

5,916   
22,027   

74,379   
(12,879)  

61,500   

Classification

December 31, 2019

Operating Expenses

Operating Expenses
Operating Expenses

$

$

13,026   

2,615   
606   

16,247   

(1) Includes short-term leases and variable lease costs, both of which were not material. Rent expense under operating leases for the years ended

December 31, 2018 and 2017 was $12.2 million and $11.4 million, respectively.

Minimum lease payments for future years as of December 31, 2018 were as follows: 

2019
2020
2021

2022
2023

Thereafter

Total

Deferred rent accruals at December 31, 2018 totaled $2.1 million, of which $0.5 million was current.

Other Information

Weighted average remaining lease term (in years):

Operating leases
Financing leases

Weighted average discount rate:

Operating leases
Financing leases

110

$

$

12,976   
12,549   
11,198   

10,574   
9,993   

27,701   

84,991   

December 31, 2019

7.9
3.3

5.2 %
5.4 %

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

As of December 31, 2019, no operating leases were expected to commence that create significant rights and obligations for the Company.

Supplemental Cash Flow Information

Cash paid for amounts included in the measurement of lease liabilities:

December 31, 2019

Cash used in operating activities:

Operating leases
Financing leases

Cash used in financing activities:

Financing leases

ROU assets obtained in exchange for lease obligations:

Operating leases
Financing leases

(13) DEBT

$
$

$

$
$

8,183   
628   

5,087   

9,772   
3,267   

As of December 31, 2019, the Company had outstanding fixed-rate notes with varying maturities for an undiscounted aggregate principal amount of

$870.0 million (collectively the Notes). The Notes are senior subordinated convertible obligations, summarized as of December 31, as follows:

2019

2018

1.50% senior subordinated convertible notes due in October 2020 (the 2020 Notes)

$

374,993    $

Unamortized discount
Unamortized deferred offering costs

Convertible Notes due 2020, net (1)

0.599% senior subordinated convertible notes due in August 2024 (the 2024 Notes)

Unamortized discount
Unamortized deferred offering costs

Convertible Notes due in 2024, net

Total convertible debt, net

Fair value of fixed rate convertible debt

Convertible Notes due in 2020 (2)
Convertible Notes due in 2024 (2)

Total

(12,078)  
(1,033)  

361,882   

495,000   

(6,533)  
(2,229)  

486,238   

848,120    $

405,679    $

521,839   

927,518    $

$

$

$

374,993   

(26,581)  
(2,334)  

346,078   

495,000   

(7,946)  
(2,715)  

484,339   

830,417   

419,722   

491,626   

911,348   

(1)

(2)

As the 2020 Notes mature in October 2020, the outstanding principal of the 2020 Notes is classified as a current liability as of December 31, 2019.

The fair value of the Company’s fixed-rate convertible debt is based on open market trades and is classified as Level 1 in the fair value hierarchy. See
Note 3 to these Consolidated Financial Statements for additional information related to the Company’s fair value measurements.

Interest expense on the Company’s debt consisted of the following:

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Coupon interest
Amortization of debt issuance costs

Accretion of discount on convertible notes

Total interest expense on convertible debt

2024 Convertible Notes

Years Ended December 31,

2019

2018

2017

$

$

4,907    $
2,031   

15,917   

12,452    $
3,610   

27,602   

22,855    $

43,664    $

10,407   
3,725   

28,575   

42,707   

In August 2017, the Company issued $495.0 million in aggregate principal amount of senior subordinated convertible notes with a maturity date of
August 1, 2024. The 2024 Notes were issued to the public at 98% of face value and bear interest at the rate of 0.599% per annum. Interest is payable semi-
annually in cash in arrears on February 1 and August 1 of each year, beginning February 1, 2018. The 2024 Notes are convertible, at the option of the holder
into shares of the Company’s common stock. The initial conversion rate for the 2024 Notes is 8.0212 shares per $1,000 principal amount of the 2024 Notes,
which represents a conversion price of approximately $124.67 per share, subject to adjustment under certain conditions. Following certain corporate
transactions, the Company will, in certain circumstances, increase the conversion rate for a holder that elects to convert its 2024 Notes in connection with such
corporate transactions by a number of additional shares of the Company’s common stock. A holder may convert fewer than all of such holder’s 2024 Notes so
long as the amount of the 2024 Notes converted is an integral multiple of $1,000 principal amount. Net proceeds from the offering were $481.7 million.

The 2024 Notes are senior subordinated, unsecured obligations, and rank (i) subordinated in right of payment to the prior payment in full of any of the

Company’s existing and future senior debt, (ii) equal in right of payment to any of the Company’s existing and future senior subordinated debt, (iii) senior in
right of payment to any of the Company’s existing and future indebtedness that is expressly subordinated in right of payment to the 2024 Notes, and (iv)
effectively subordinated to any of the Company’s existing and future secured indebtedness, to the extent of the value of the collateral securing that
indebtedness and structurally subordinated to all existing and future indebtedness and other liabilities, including trade payables, and (to the extent the
Company is not a holder thereof) preferred equity, if any, of the Company’s subsidiaries. Upon the occurrence of a “fundamental change,” as defined in the
indenture governing the 2024 Notes, the holders may require the Company to repurchase all or a portion of such holder’s 2024 Notes for cash at 100% of the
principal amount of the 2024 Notes being purchased, plus any accrued and unpaid interest.

In connection with the issuance of the 2024 Notes, the Company recorded a discount on the 2024 Notes of $9.9 million, which will be accreted and

recorded as additional interest expense over the life of the 2024 Notes. In connection with the issuance of the 2024 Notes, the Company incurred $3.4 million
of issuance costs.

2018/2020 Convertible Notes

In October 2013, the Company issued $750.0 million in aggregate principal amount of senior subordinated convertible notes consisting of $375.0

million in aggregate principal amount of 0.75% senior subordinated convertible notes that had a maturity date of October 15, 2018 (the 2018 Notes) and $375.0
million in aggregate principal amount of 1.50% senior subordinated convertible notes with a maturity date of October 15, 2020. Net proceeds from the offering
were $726.2 million. Interest on the 2020 Notes is payable semiannually in arrears on April 15 and October 15 of each year.

The Company’s 2018 Notes matured on October 15, 2018. Substantially all holders of the 2018 Notes converted at maturity and the 2018 Notes were
settled with a combination of cash and shares of the Company’s common stock, consisting of approximately $375.0 million in cash and 190,220 in shares. The
shares issued represented the value of the 2018 Notes in excess of the conversion price of $94.15, as measured over a 25-day averaging period. The cash
payment comprised the principal, the value of fractional shares and the value of unconverted 2018 Notes.

The 2020 Notes are senior unsecured obligations, and rank (i) subordinated to any of the Company’s existing and future unsecured senior debt,
(ii) equally to any of the Company’s existing and future senior subordinated debt, (iii) senior to any of the Company’s future indebtedness that is expressly
subordinated to the 2020 Notes, and (iv) effectively junior to any secured indebtedness to the extent of the value of the assets securing such indebtedness.
Upon the occurrence of a “fundamental change”, as defined in the indenture, the holders may require the Company to repurchase all or a portion of the 2020
Notes for cash at 100% of the principal amount of the Notes being purchased, plus any accrued and unpaid interest.

112

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

The initial conversion rate for the 2020 Notes is 10.6213 shares per $1,000 principal amount of the 2020 Notes, which represents a conversion price

of approximately $94.15 per share. Such conversion rates are subject to adjustment under certain conditions. Holders may convert their 2020 Notes at their
option at any time prior to July 15, 2020 only under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending
on March 31, 2014, if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of
30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the applicable
conversion price on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the measurement period)
in which the trading price per $1,000 principal amount of the relevant notes for each trading day of the measurement period was less than 98% of the product
of the last reported sale price of the Company’s common stock and the applicable conversion rate on each such trading day; or (3) upon the occurrence of
specified corporate events. On or after July 15, 2020, in the case of the 2020 Notes, until the close of business on the second scheduled trading day
immediately preceding the applicable maturity date, holders may convert their notes at any time, regardless of the foregoing circumstances. Upon conversion
of the 2020 Notes, the Company may pay cash, shares of the Company’s common stock or a combination of cash and stock, as determined by the Company in
its discretion.

The Company separately accounted for the liability and equity components of the 2020 Notes by allocating the proceeds from issuance of the 2020

Notes between the liability component and the embedded conversion option, or equity component. This allocation was done by first estimating an interest rate
at the time of issuance for similar notes that do not include the embedded conversion option. The Company allocated $156.2 million to the equity component,
net of offering costs of $5.1 million. The Company recorded a discount on the 2018 Notes and 2020 Notes of $161.3 million, which was accreted and recorded
as additional interest expense over the lives of the 2018 Notes and 2020 Notes. Additionally, in connection with the issuance of the 2018 Notes and the 2020
Notes, the Company incurred $23.8 million of issuance costs, which were deferred and amortized over the lives of the 2018 Notes and 2020 Notes and
recorded as additional interest expense.

To minimize the impact of potential dilution upon conversion of the 2018 Notes and the 2020 Notes, the Company entered into capped call

transactions separate from the issuance of the Notes with certain counterparties covering 3,982,988 shares of the Company’s common stock, subject to
adjustment, which applies 50% to the 2018 Notes and 50% to the 2020 Notes. The capped calls have a strike price of $94.15 and a cap price of $121.05 and
are exercisable when and if the Notes are converted. If upon conversion of the Notes, the price of the Company’s common stock is above the strike price of the
capped calls, the counterparties will deliver shares of the Company’s common stock and/or cash with an aggregate value equal to the difference between the
price of the Company’s common stock at the conversion date and the strike price, multiplied by the number of shares of the Company’s common stock related
to the capped calls being exercised. The Company paid $29.8 million for these capped calls transactions, which was recorded as additional paid-in capital.

Upon maturity of the 2018 Notes, the Company received from the capped call counterparties 95,127 shares of the Company’s common stock, which

were accounted for as treasury shares and subsequently retired. The Company incurred no gain or loss upon the extinguishment of the 2018 Notes.

See Note 19 to these Consolidated Financial Statements for further discussion of the effect of conversion on net loss per common share.

Revolving Credit Facility

In October 2018, the Company entered into an unsecured revolving credit facility of up to $200.0 million (the 2018 Credit Facility). The 2018 Credit

Facility includes a letter of credit subfacility and a swingline loan subfacility and is intended to finance ongoing working capital needs and for other general
corporate purposes. Borrowings under the 2018 Credit Facility bear interest, at the Company’s option, at a rate equal to either (a) the LIBOR rate (except that if
LIBOR is less than zero it shall be deemed to be zero for purposes of the 2018 Credit Facility), or LIBOR successor rate, plus an applicable margin ranging
from 1.00% to 1.95% per annum, based upon the Company’s net leverage ratio and EBITDA for each of the two most recently ended four-quarter
measurement periods, or (b) the Base Rate, generally the prime lending rate, plus an applicable margin ranging from 0.00% to 0.95%, based upon the
Company’s net leverage ratio and EBITDA for each of the two most recently ended four-quarter measurement periods. Commitment fees payable on the
undrawn amount range from 0.15% to 0.35% per annum based upon the Company’s net leverage ratio and EBITDA for each of the two most recently ended
four-quarter measurement periods. The Company’s obligations under the 2018 Credit Facility are guaranteed by its direct subsidiary, California Corporate
Center Acquisition LLC, and such obligations may in the future be guaranteed from time to time by certain other material domestic subsidiaries. The 2018
Credit Facility matures on October 19, 2021 at which time all outstanding amounts become due and payable, except that if at least $100.0 million aggregate
principal amount of the 2020 Notes remain outstanding on August 1, 2020 and certain other conditions have not been met, the Company may be required to
repay all amounts borrowed under the 2018 Credit Facility on August 1, 2020. The 2018 Credit Facility contains financial covenants requiring the Company to
maintain a

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

minimum interest coverage ratio and a minimum liquidity requirement.

The Company incurred approximately $1.0 million of issuance costs, which will be amortized to Interest Expense over the term of the 2018 Credit

Facility. As of December 31, 2019, there were no outstanding amounts due under the 2018 Credit Facility and the Company and certain of its subsidiaries that
serve as guarantors were in compliance with all covenants.

(14) ACCUMULATED OTHER COMPREHENSIVE INCOME

The following table summarizes amounts reclassified out of AOCI and their effect on the Company’s Consolidated Statements of Operations for the

years ended December 31, 2019, 2018 and 2017.

Details about AOCI Components

Gains (losses) on cash flow hedges:

Forward contracts
Forward contracts

Total gain (loss) on cash flow hedges
Gain on sale of available-for-sale debt securities

Income tax effect of the above

Total gain on available-for-sale debt securities

Years Ended December 31,

2019

2018

2017

Consolidated Statement of
Operations Classification

$

17,672    $
(1,819)  

15,853   

(6,005)   $
3,958   

(2,047)  

—   

—   

—   

—   

—   

—   

(5,377)   Net product revenues
264    Operating expenses

(5,113)  

3,252    Other income, net

Provision for (benefit from) income
taxes

(1,191)  

2,061   

$

15,853    $

(2,047)   $

(3,052)   Net loss

The following table summarizes changes in the accumulated balances for each component of AOCI, including current period other comprehensive

income (loss) and reclassifications out of AOCI, for the periods presented.

AOCI balance at December 31, 2017

$

(20,232)   $

(2,722)   $

(7)   $

(22,961)  

Unrealized Gains
(Losses) on Cash
Flow Hedges

Unrealized Gains
(Losses) on
Available-for-Sale
Debt Securities

Other

Total

Impact of change in accounting principle (1)

AOCI balance at January 1, 2018

Other comprehensive income (loss) before
  reclassifications

Less: gain (loss) reclassified from AOCI
Tax effect

Net current-period other comprehensive income (loss)

AOCI balance at December 31, 2018

Other comprehensive income (loss) before
  reclassifications
Less: gain (loss) reclassified from AOCI

Tax effect

Net current-period other comprehensive income (loss)

—   

(20,232)  

25,386   

(2,047)  
—   

27,433   

7,201   

25,266   
15,853   

—   

9,413   

(586)  

(3,308)  

1,804   

—   
(413)  

1,391   

(1,917)  

7,122   
—   

(1,640)  

5,482   

—   

(7)  

(6)  

—   
—   

(6)  

(13)  

(2)  
—   

—   

(2)  

AOCI balance at December 31, 2019

$

16,614    $

3,565    $

(15)   $

(586)  

(23,547)  

27,184   

(2,047)  
(413)  

28,818   

5,271   

32,386   
15,853   

(1,640)  

14,893   

20,164   

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

(1)

The amount represents the reclassification from AOCI to Accumulated Deficit due to the adoption of ASU 2018-02, Income Statement-Reporting
Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASU 2018-02) in the
first quarter of 2018.

(15) REVENUE, CREDIT CONCENTRATIONS AND GEOGRAPHIC INFORMATION

The Company operates in one business segment, which primarily focuses on the development and commercialization of innovative therapies for
people with serious and life-threatening rare diseases and medical conditions. The Company considers there to be revenue concentration risks for regions
where net product revenues exceed 10% of consolidated net product revenues. The concentration of the Company’s Net Product Revenues within the regions
below may have a material adverse effect on the Company’s revenues and results of operations if sales in the respective regions experience difficulties.

The following table disaggregates Total Revenues from external customers and collaborative partners by geographic region.

Total revenues by geographic region:

United States
Europe

Latin America
Rest of world

Total revenues

The following table disaggregates total Net Product Revenues by product.

Net product revenues by product:

Aldurazyme
Brineura

Firdapse
Kuvan
Naglazyme

Palynziq
Vimizim

Years Ended December 31,

2019

2018

2017

$

778,440    $
509,188   

218,792   
197,628   

696,793    $
436,434   

185,046   
172,939   

588,243   
398,814   

181,970   
144,619   

$

1,704,048    $

1,491,212    $

1,313,646   

Years Ended December 31,

2019

2018

2017

$

97,809    $
71,997   

135,097    $
39,889   

22,348   
463,353   
374,334   

86,857   
544,345   

21,787   
433,582   
345,851   

12,173   
481,977   

89,959   
8,595   

18,890   
407,542   
332,208   

—   
413,251   

Total net product revenues

$

1,661,043    $

1,470,356    $

1,270,445   

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Net Product Revenues by geographic region are based on patient location for the Company’s commercial products, except for Aldurazyme. Although

Genzyme sells Aldurazyme worldwide, the revenues earned by the Company based on Genzyme’s net sales are included in the U.S. region, as the
transactions are with Genzyme, whose headquarters is located in the U.S. Genzyme is the Company’s sole customer for Aldurazyme and is responsible for
marketing and selling Aldurazyme to third parties. The table below disaggregates total Net Product Revenues based on patient location for products sold
directly by the Company, and global sales of Aldurazyme, which is marketed by Genzyme.

Region:

United States
Europe
Latin America

Rest of world

Total net product revenues marketed by the Company

Aldurazyme net product revenues marketed by Genzyme

Total net product revenue

Years Ended December 31,

2019

2018

2017

$

669,171    $
485,596   
218,792   

189,675   

1,563,234   
97,809   

560,030    $
424,357   
184,984   

165,888   

1,335,259   
135,097   

495,741   
363,538   
181,963   

139,244   

1,180,486   
89,959   

$

1,661,043    $

1,470,356    $

1,270,445   

The following table illustrates the percentage of the Company’s total Net Product Revenues attributed to the Company’s largest customers.

Customer A

Customer B
Customer C

Total

Years Ended December 31,

2019

2018

2017

17 %

13 %
11 %

41 %

18 %

12 %
10 %

40 %

18 %

14 %
10 %

42 %

On a consolidated basis, two customers accounted for 24% and 16% of the Company’s December 31, 2019 accounts receivable balance,

respectively, compared to December 31, 2018 when two customers accounted for 30% and 16% of the accounts receivable balance, respectively. As of
December 31, 2019 and 2018, the accounts receivable balance for Genzyme included $60.2 million and $73.9 million, respectively, of unbilled accounts
receivable, which become payable to the Company when the product is sold through by Genzyme. The Company does not require collateral from its
customers, but does perform periodic credit evaluations of its customers’ financial condition and requires immediate payment in certain circumstances.

The Company sells its products in countries that face economic volatility and weakness. Although the Company has historically collected receivables
from customers in such countries, sustained weakness or further deterioration of the local economies and currencies may cause customers in those countries
to be unable to pay for the Company’s products. The Company has not historically experienced a significant level of uncollected receivables and has received
continued payments from its more aged accounts in these countries. The Company believes that the allowances for doubtful accounts related to these
countries, if any, was adequate based on its analysis of the specific business circumstances and expectations of collection for each of the underlying accounts
in these countries.

Non-monetary long-lived assets, which primarily consist of property, plant and equipment, intangible assets, ROU assets, deferred tax assets and

goodwill, are summarized by geographic region in the following table.

Long-lived assets by geography:

United States

Ireland
Rest of world

Total long-lived assets

116

December 31,

2019

2018

$

$

1,789,044    $

1,719,733   

292,957   
188,505   

220,878   
158,583   

2,270,506    $

2,099,194   

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

(16) EQUITY COMPENSATION PLANS AND STOCK-BASED COMPENSATION

Equity Compensation Plans

Shares Available Under Equity Compensation Plans

As of December 31, 2019, an aggregate of approximately 39.7 million unissued shares was authorized for future issuance under the Company’s stock
plans, which primarily includes shares issuable under the 2017 Equity Incentive Plan and the ESPP. Under the 2017 Equity Incentive Plan, shares issued under
the Amended and Restated 2006 Share Incentive Plan (the 2006 Share Incentive Plan) and the 2017 Equity Incentive Plan that expire or are forfeited generally
become available for future issuance under the 2017 Equity Incentive Plan. Shares formerly reserved for future issuance under the 2006 Share Incentive Plan
were transferred to the 2017 Equity Incentive Plan and became available for issuance thereunder upon the effectiveness of the 2017 Equity Incentive Plan. The
Company’s stock-based compensation plans are administered by the Company’s Board of Directors (the Board), or designated Committee thereof, which
selects persons to receive awards and determines the number of shares subject to each award and the terms, conditions, performance measures and other
provisions of the awards. See Note 3 to these Consolidated Financial Statements for discussion regarding the valuation of equity awards.

2017 Equity Incentive Plan

The 2017 Equity Incentive Plan, approved by the Company’s stockholders on June 6, 2017 and effective as of that same date, is the successor to and
continuation of the 2006 Share Incentive Plan and provides for awards of RSUs and stock options as well as other forms of equity compensation. No additional
awards will be granted under the 2006 Share Incentive Plan; however, there are vested and unvested awards outstanding under the 2006 Share Incentive
Plan. Stock option awards granted to employees generally vest over a four-year period on a cliff basis twelve months after the grant date and then monthly
thereafter. The contractual term of stock option awards is generally ten years from the grant date. RSUs granted to employees generally vest annually over a
straight-line four-year period after the grant date.

As of December 31, 2019, approximately 21.5 million shares were authorized and reserved for future issuance under the 2017 Equity Incentive Plan.

Employee Stock Purchase Plan

The ESPP was initially approved in June 2006, replacing the Company’s previous plan, and was most recently amended in June 2019. Under
BioMarin’s ESPP, employees meeting specific employment qualifications are eligible to participate and can purchase shares on established dates (each
purchase date) semi-annually through payroll deductions at the lower of 85% of the fair market value of the stock at the commencement of the offering period
or each purchase date of the offering period. Each offering period will span up to two years. The ESPP permits eligible employees to purchase common stock
through payroll deductions for up to 10% of qualified compensation, up to an annual limit of $25,000. The ESPP is intended to qualify as an “employee stock
purchase plan” under Section 423 of the IRC. During the year ended December 31, 2019, the Company issued 0.2 million shares under the ESPP.

As of December 31, 2019, approximately 7.0 million shares were authorized and 3.6 million shares reserved for future issuance under the ESPP.

Board of Director Grants

September 19, 2019, the Board of BioMarin approved revised compensation for the Independent Directors of the Company. On the date of the

Company’s annual meeting of stockholders for a given year, each re-elected Independent Director receives an RSU grant valued at $400,000 ($375,000 prior
to September 19, 2019), with the number of RSUs to be granted calculated based on the three-month trailing average closing price of the Company’s common
stock on the Nasdaq Global Select Market. The RSUs subject to the annual award vest in full on the one-year anniversary of the grant date, subject to each
respective Director providing service to the Company through such vesting date. Upon election or appointment, a new Independent Director will receive an
RSU grant on the same terms as the annual award, pro-rated for amount and vesting to the nearest quarter for the time such new Independent Director will
serve prior to the Company’s next annual meeting of stockholders.

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Stock-based Compensation

BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Stock-based compensation expense included on the Company’s Consolidated Statements of Operations for all stock-based compensation

arrangements was as follows:

Cost of sales
Research and development
Selling, general and administrative

Total stock-based compensation expense

Years Ended December 31,

2019

2018

2017

$

$

16,146    $
56,649   
87,070   

13,558    $
57,557   
77,704   

10,636   
53,112   
76,515   

159,865    $

148,819    $

140,263   

Stock-based compensation of $20.3 million, $20.0 million and $16.1 million was capitalized into inventory for the years ended December 31, 2019,

2018 and 2017, respectively. Capitalized stock-based compensation is recognized in Cost of Sales when the related product is sold.

Restricted Stock Units

Restricted Stock Unit Awards with Service-Based Vesting Conditions

Below is a summary of RSU activity under the plan for the year ended December 31, 2019:

Non-vested units as of December 31, 2018

Granted
Vested
Forfeited

Non-vested units as of December 31, 2019

Weighted
Average
Grant Date
Fair Value

Weighted
Average
Remaining
Years

Aggregate
Intrinsic
Value

87.42   

91.28   
91.20   
89.39   

88.54   

2.6 $

268,012   

2.6 $

303,144   

Shares

3,147,523    $

1,937,858    $
(1,136,627)   $
(363,370)   $
3,585,384    $

The weighted-average grant date fair value per share of RSUs granted during the years ended December 31, 2019, 2018 and 2017, was $91.28,

$84.63 and $87.88, respectively. The total intrinsic value of restricted stock that vested and was released in the years ended December 31, 2019, 2018 and
2017, was $101.0 million, $84.5 million and $76.5 million, respectively.

As of December 31, 2019, total unrecognized compensation cost related to unvested RSUs with service-based vesting conditions of $225.5 million

was expected to be recognized over a weighted average period of 2.6 years.

Restricted Stock Unit Awards with Performance Conditions

The Compensation Committee of the Board (with respect to awards to certain executive officers other than the Chief Executive Officer) and the Board
(with respect to awards to the Chief Executive Officer) may grant RSUs with performance-based vesting conditions to certain executive officers. In March 2019,
the Compensation Committee and Board approved a grant of RSUs with performance-based vesting conditions. This award is contingent upon the
achievement of a 2019 revenue target and the earned RSUs, if any, vest over a three-year service period. The number of shares that may be earned range
between 50% and 200% of the base RSUs, depending on the percentage of 2019 “managed revenues” (defined as the Company’s net product revenues,
excluding net revenues attributable to Aldurazyme, and determined using fixed foreign currency exchange rates) achieved against the target managed
revenues, with a threshold achievement level of 75% of target and a ceiling achievement level of 125% of target.

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Below is a summary of activity related to RSUs with revenue-based performance conditions under the plan for the year ended December 31, 2019:

Non-vested units as of December 31, 2018

Granted

Vested
Forfeited

Non-vested units as of December 31, 2019

Shares

256,418    $
99,010    $

(125,687)   $
(2,857)   $
226,884    $

Weighted
Average
Grant Date
Fair Value

84.85   
94.53   

84.85   
83.57   

89.09   

The weighted-average grant date fair value of RSUs with performance conditions was $83.57 and $87.42 for the years ended December 31, 2018 and

2017, respectively. As of December 31, 2019, total unrecognized compensation expense of $10.5 million related to RSUs with performance-based vesting
conditions was expected to be recognized over a weighted average period of 1.7 years.

In August 2019, the Compensation Committee of the Board approved the grant of 44,260 RSUs with performance-based vesting conditions and a
grant date fair value of $81.00 per RSU. These awards are contingent upon obtaining regulatory approval for valoctocogene roxaparvovec by January 2022
and the awarded RSUs, if any, will vest from the time regulatory approval is obtained through January 2022. The Company evaluated the current timeline and
the status of regulatory applications and determined that for accounting purposes attainment of the performance measure was not probable as of
December 31, 2019 as the regulatory approval is outside of the Company's control. Therefore, the Company did not record any expense associated with these
awards, as such the full value of $3.6 million remains unrecognized and the Company does not have an estimate of the expected weighted average period
over which expense is to be recognized.

Restricted Stock Unit Awards with Market Conditions

In March 2019, the Compensation Committee and Board approved the grant of 99,010 RSUs with market-based vesting conditions (base TSR-RSUs)

to certain executives. These base TSR-RSUs vest, if at all, in full following a three-year service period only if certain total shareholder return (TSR) results
relative to the Nasdaq Biotechnology Index comparative companies are achieved. The number of shares that may be earned range between zero percent and
200% of the base TSR-RSUs with a ceiling achievement level of 100% of the base TSR-RSUs in the event the Company’s TSR is above the 50th percentile
but negative on an absolute basis. The Company utilized a Monte Carlo simulation model to determine the grant date fair value of $143.92 per base TSR-RSU
using the following assumptions: an expected term of 2.8 years, discount rate of 2.4% dividend yield of 0.0% and expected volatility rate derived from historical
volatilities for the Company and the members of the referenced peer group. Compensation expense for awards with market conditions is not reversed if the
market condition is not met.

As of December 31, 2019, total unrecognized compensation expense of $9.4 million related to base TSR-RSUs was expected to be recognized over a

weighted average period of 2.2 years.

Stock Options and Purchase Rights

Stock Options

The following table summarizes activity under the Company’s stock option plans for the year ended December 31, 2019. All stock option grants

presented in the table had exercise prices not less than the fair value of the underlying common stock on the

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grant date:

BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Options outstanding as of December 31, 2018

Granted
Exercised

Expired and forfeited

Options outstanding as of December 31, 2019

Options unvested as of December 31, 2019
Exercisable at December 31, 2019

Weighted
Average
Exercise
Price

Weighted
Average
Remaining
Years

Aggregate
Intrinsic
Value (1)

63.06   
94.45   
28.95   

82.24   

67.99   

89.49   
63.48   

5.1 $

183,091   

4.7 $

8.5 $
3.9 $

146,700   

447   
146,253   

Shares

7,363,609    $
610,250    $
(567,672)   $

(141,952)   $

7,264,235    $

1,258,052    $
6,006,183    $

(1)

The aggregate intrinsic value for outstanding options is calculated as the difference between the exercise price of the underlying awards and the
quoted price of the Company’s common stock on the Nasdaq Global Select Market as of the last trading day for the respective year. The aggregate
intrinsic value of options outstanding and exercisable includes options with an exercise price below $84.55, the closing price of the Company’s
common stock on the Nasdaq Global Select Market on December 31, 2019.

The weighted-average fair value per stock option granted in the years ended December 31, 2019, 2018 and 2017, were $36.84, $33.40 and $36.07,

respectively. The total intrinsic value of options exercised during the years ended December 31, 2019, 2018 and 2017, was $32.5 million, $79.9 million and
$77.0 million, respectively. The aggregate intrinsic value of options exercised was determined as of the date of option exercise. Upon the exercise of the
options, the Company issues new common stock from its authorized shares.

The assumptions used to estimate the per share fair value of stock options granted during the periods presented were as follows:

Expected volatility

Dividend yield
Expected term
Risk-free interest rate

Years Ended December 31,

2019

2018

2017

37.1 – 37.4% 

36.8 – 38.4% 

37.6 – 39.7% 

0.00% 
4.6 – 5.8 years 
2.2 – 3.0% 

0.00% 
4.6 – 5.7 years 
2.3 – 2.8% 

0.00% 
4.9 – 6.6 years 
1.8 – 2.2% 

As of December 31, 2019, total unrecognized compensation cost related to unvested stock options of $36.5 million was expected to be recognized

over a weighted average period of 2.4 years. The net tax benefit from stock options exercised during the year ended December 31, 2019 was $1.2 million.

The assumptions used to estimate the per share fair value of stock purchase rights granted under the ESPP were as follows:

Expected volatility
Dividend yield

Expected term
Risk-free interest rate

Years Ended December 31,

2019

2018

2017

27.7 – 35.0% 
0.00% 

6 – 24 months 
1.2 – 2.8% 

29.7 – 35.0% 
0.00% 

6 – 24 months 
1.2 – 2.8% 

27.7 – 42.3% 
0.00% 

6 – 24 months 
1.0 – 1.6% 

As of December 31, 2019, total unrecognized compensation cost related to unvested stock options issuable under the ESPP of $14.3 million was

expected to be recognized over a weighted average period of 1.4 years.

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

(17) OTHER EMPLOYEE BENEFITS

Employment Agreements

The Company has entered into employment agreements with certain officers. Generally, these agreements can be terminated without cause by the

Company upon prior written notice and payment of specified severance, or by the officer upon four weeks’ prior written notice to the Company.

401(k) Plan

The Company sponsors the BioMarin Retirement Savings Plan (the 401(k) Plan). Most employees are eligible to participate following the start of their
employment, at the beginning of each calendar month. Employees may contribute to the 401(k) Plan up to the lesser of 100% of their current compensation or
an amount up to a statutorily prescribed annual limit. The Company pays the direct expenses of the 401(k) Plan and matches 100% of each participating
employee’s eligible contributions, up to a maximum of the lesser of 6% of the employee’s annual compensation or $19,000 per year ($19,500 per year effective
January 1, 2020). The Company’s matching contribution vests immediately and was approximately $28.5 million, $23.0 million and $19.8 million for the years
ended December 31, 2019, 2018 and 2017, respectively.

Deferred Compensation Plan

The Company amended the NQDC in the second quarter of 2019 to prohibit the diversification of deferrals of Company stock, which resulted in a

change to the classification of the obligation associated with the Company's common stock held in the NQDC. Company stock issued and held by the NQDC is
accounted for similarly to treasury stock in that the fair value of the employer stock was determined on the grant date and the shares are issued into the NQDC
when the restricted stock vests. The corresponding deferred compensation obligation is classified as equity and changes in the fair value of Company stock
held in the NQDC are no longer recognized in earnings. Other contributions held in the NQDC are classified as trading securities and recorded at fair value
with the corresponding deferred compensation obligation classified as a liability. Changes in the fair value of non-BioMarin investments are recognized in
earnings in the period they occur.

See Note 10 to these Consolidated Financial Statements for additional discussion on the fair value and presentation of the NQDC assets and

liabilities.

(18) INCOME TAXES

The provision for (benefit from) income taxes was based on loss before income taxes as follows:

U.S. Source
Non-U.S. Source

Loss before income taxes

Years Ended December 31

2019

2018

2017

$

$

(182,112)   $
87,301   

(128,700)   $
(14,005)  

(94,811)   $

(142,705)   $

(19,461)  
(16,414)  

(35,875)  

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

The U.S. and foreign components of the provision for (benefit from) income taxes were as follows:

Years Ended December 31,

2019

2018

2017

Provision for (benefit from) current income tax expense:

Federal

State and local
Foreign

Provision for (benefit from) deferred income taxes:

Federal
State and local
Foreign

$

5,127    $

(2,660)   $

1,331   
5,339   

11,797   

(58,311)  
(5,394)  
(19,055)  

(82,760)  

588   
4,956   

2,884   

(72,074)  
(994)  
4,690   

(68,378)  

Provision for (benefit from) income taxes

$

(70,963)   $

(65,494)   $

29,848   

2,880   
3,975   

36,703   

12,446   
32,336   
(318)  

44,464   

81,167   

On December 22, 2017, the Tax Cuts and Jobs Act (the 2017 Tax Act) was signed into law and resulted in significant changes to the U.S. corporate

income tax system. These changes included a federal statutory rate reduction from 35% to 21% and the elimination or reduction of certain domestic deductions
and credits, including a 50% reduction in the orphan drug credit benefit. The 2017 Tax Act changed U.S. international taxation from a worldwide basis to a
modified territorial system that includes base erosion prevention measures on foreign earnings. This has resulted in the Company’s foreign subsidiaries being
subject to U.S. taxation in the current year. Changes to tax laws and tax rates are required to be accounted for in the period of the enactment, therefore the
Company’s tax expense for the year ended December 31, 2017 included the impact of the 2017 Tax Act.

In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (SAB

118), which allowed companies to record provisional amounts during a measurement period not to extend beyond one year of the enactment date. As a result,
the Company previously provided a provisional estimate of the effect of the 2017 Tax Act in its 2017 financial statements. In the fourth quarter of 2018, the
Company completed its analysis to determine the effect of the 2017 Tax Act and recorded immaterial adjustments as of December 31, 2018. The Company has
elected to account for Global Intangible Low-taxed Income (GILTI) as a current period expense when incurred.

The following is a reconciliation of the statutory federal income tax (benefit) expense to the Company’s effective tax rate:

Federal statutory income tax benefit

State and local taxes
Orphan Drug & General Business Credit
Stock compensation expense

Changes in the fair value of contingent consideration
Foreign Source Income Subject to US Tax
Foreign tax rate differential (1)
Section 162(m) limitation
Tax Cuts and Jobs Act of 2017

Tax Reserves
Other
Valuation allowance/deferred benefit

Effective income tax (benefit) expense

December 31,

2019

2018

2017

$

(19,911)   $

(29,968)   $

(2,784)  
(43,124)  
239   

(1,804)  
(52)  
(30,639)  

8,294   
—   

12,123   
(1,132)  
7,827   

(276)  
(66,451)  
(5,647)  

(2,361)  
6,543   
12,583   

7,440   
—   

8,545   
(423)  
4,521   

$

(70,963)   $

(65,494)   $

(12,556)  

7,282   
(33,683)  
(6,843)  

1,099   
30,181   
9,403   

9,492   
42,338   

2,262   
(2,940)  
35,132   

81,167   

(1)  For the year ended December 31, 2019, the foreign rate differential included foreign local tax expense which was at an effective rate lower than the U.S.
statutory rate and was offset by the benefit of the valuation allowance release against the deferred tax assets of the Company’s Dutch subsidiary of
$29.6 million.

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

The significant components of the Company’s net deferred tax assets were as follows:

Net deferred tax assets:

Net operating loss carryforwards

Tax credit carryforwards
Accrued expenses, reserves, and prepaids
Intangible assets

Stock-based compensation
Lease liabilities
Inventory

Other
Valuation allowance

Total deferred tax assets

Joint venture basis difference
Acquired intangibles
Deferred revenue

Convertible notes discount
ROU assets
Property, plant and equipment

Total deferred tax liabilities

Net deferred tax assets

December 31,

2019

2018

$

32,181    $

508,560   
61,807   
29,413   

42,873   
11,470   
6,290   

575   
(86,197)  

606,972   

(993)  
(1,647)  
(3,003)  

(2,364)  
(10,258)  
(46,642)  

(64,907)  

$

542,065    $

42,007   

466,066   
55,041   
18,734   

35,966   
—   
12,859   

278   
(107,928)  

523,023   

(1,010)  
(6,508)  
(4,480)  

(5,157)  
—   
(44,916)  

(62,071)  

460,952   

In the second quarter of 2019, the Company determined that it is more likely than not that the deferred tax assets, including net operating losses and

tax credit carryforwards of its Dutch subsidiary, will be realized. In making this determination, the Company analyzed the recent history of earnings, forecasts of
future earnings and cumulative earnings for the last three years of the Dutch subsidiary. As a result, the Company recorded a $29.6 million reversal of its
deferred tax asset valuation allowance in the second quarter of 2019.

As of December 31, 2019, the Company had the following net operating loss and tax credit carryforwards, which if not utilized, will expire as follows:

Type

Federal net operating loss carryforwards
Federal R&D and orphan drug credit carryforwards

State net operating loss carryforwards
Dutch net operating loss carryforwards

Amount

Year

144,566   
507,292   

161,341   
89,064   

2028 – 2037
2030 – 2038

2020 – 2039
2021 – 2025

$
$

$
$

Included in the above table are $132.4 million of federal net operating loss carryforwards that will carry forward indefinitely. Not included in the table

above are $112.1 million of state research credit carryovers that will carry forward indefinitely.

The Company’s net operating losses and credits could be subject to annual limitations due to ownership change limitations provided by IRC Section
382 and similar state provisions. An annual limitation could result in the expiration of net operating losses and tax credit carryforward before utilization. There
are limitations on the tax attributes of acquired entities however, the Company does not believe the limitations will have a material impact on the utilization of
the net operating losses or tax credits.

The financial statement recognition of the benefit for a tax position is dependent upon the benefit being more likely than not to be sustainable upon

audit by the applicable taxing authority. If this threshold is met, the tax benefit is then measured and recognized at the largest amount that is greater than 50%
likely of being realized upon ultimate settlement.

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

A reconciliation of the beginning and ending amount of unrecognized tax benefits for the years ended December 31, 2019 and 2018, is as follows:

Balance at beginning of period

Additions based on tax positions related to the current year
(Deletions) Additions for tax positions of prior years

Balance at end of period

December 31,

2019

2018

$

$

147,445    $
19,287   

2,016   

168,748    $

113,486   
30,811   

3,148   

147,445   

Included in the balance of unrecognized tax benefits at December 31, 2019 were potential benefits of $167.2 million that, if recognized, would affect
the effective tax rate. The Company’s policy for classifying interest and penalties associated with unrecognized income tax benefits is to include such items in
the income tax expense. The total amount of accrued interest and penalties was not significant as of December 31, 2019.

The Company files income tax returns in the U.S. and various foreign jurisdictions. The U.S. and foreign jurisdictions have statute of limitations

ranging from three to five years. However, carryforward tax attributes that were generated in 2014 and earlier may still be adjusted upon examination by tax
authorities.

U.S. income and foreign withholding taxes have not been recognized on the excess of the amount for financial reporting over the tax basis of
investments in foreign subsidiaries that are essentially permanent in duration. This excess totaled approximately $31.2 million as of December 31, 2019, which
will be indefinitely reinvested; deferred income taxes have not been provided on such foreign earnings.

(19) NET LOSS PER COMMON SHARE

Potentially issuable shares of common stock include shares issuable upon the exercise of outstanding employee stock option awards, common stock

issuable under the Company’s ESPP, unvested RSUs, common stock held by the NQDC and contingent issuances of common stock related to convertible
debt.

The following table sets forth the computation of basic and diluted loss per common share (common shares in thousands):

Numerator:

Net loss, basic

Less: gain on common stock held by the NQDC

Net loss, diluted

Denominator:

Weighted-average common shares outstanding, basic
Effect of dilutive securities:

Common stock held by the NQDC

Weighted-average common shares outstanding, diluted

Net loss per common share, basic

Net loss per common share, diluted

Years Ended December 31,

2019

2018

2017

$

$

$

$

(23,848)   $

—   

(77,211)   $
(710)  

(117,042)  
—   

(23,848)   $

(77,921)   $

(117,042)  

179,039   

177,061   

174,427   

—   

207   

—   

179,039   

177,268   

174,427   

(0.13)   $

(0.13)   $

(0.44)   $

(0.44)   $

(0.67)  

(0.67)  

The table below presents potential shares of common stock that were excluded from the computation of basic and diluted

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

loss per common share as they were anti-dilutive (in thousands):

Options to purchase common stock
Common stock issuable under the 2018 Notes
Common stock issuable under the 2020 Notes

Common stock issuable under the 2024 Notes
Unvested restricted stock units
Common stock potentially issuable for ESPP purchases

Common stock held by the NQDC

Total number of potentially issuable shares

Years Ended December 31,

2019

2018

2017

7,264   
—   
3,983   

3,970   
3,956   
587   

205   

7,364   
—   
3,983   

3,970   
3,404   
435   

—   

8,108   
3,983   
3,983   

3,970   
2,911   
436   

220   

19,965   

19,156   

23,611   

The potential effect of the capped call transactions with respect to the 2020 Notes was excluded from the diluted net income/loss per share as the

Company’s closing stock price on December 31, 2019, 2018 and 2017 did not exceed the conversion price of $94.15 per share for the 2020 Notes. The
potential effect of the capped call transactions with respect to the 2018 Notes was excluded from the diluted net income/loss per share as the Company’s
closing stock price on December 31, 2017 did not exceed the conversion price of $94.15 per share for the 2018 Notes. There is no similar capped call
transaction associated with the 2024 Notes. See Note 13 to these Consolidated Financial Statements for information on the Company’s debt.

(20) LICENSE AND COLLABORATION AGREEMENTS

In October 2019, the Company entered into a worldwide, exclusive licensing agreement with a third party for tralesinidase alfa (formerly referred to as

BMN 250), an investigational enzyme replacement therapy to treat Sanfilippo Syndrome Type B. In consideration, the Company received an upfront payment
of $3.0 million and a minority equity investment in the licensee of $5.0 million, and is entitled to receive royalties on net sales of tralesinidase alfa and milestone
payments if certain development, regulatory and sales milestones are met by the licensee. The Company has also committed to providing the licensee with
certain amounts of product supply and specified transition services, as well as to performing certain continued manufacturing activities.

The Company evaluated the design and purpose of the third-party licensee and determined that it is a variable interest entity (VIE), as the equity-at-
risk is insufficient to support the licensee’s operations. The Company has concluded that it is not the primary beneficiary of the VIE as the Company does not
have the power to direct the activities of the VIE that most significantly impact its performance. The Company is accounting for the minority equity investment at
cost, less impairment, if any, adjusted for observable price changes, as it does not exercise significant influence over the operations of the licensee.

Other than providing the licensee with certain amounts of product supply, specified transition services and continued manufacturing activities, the

Company has no other involvement with the operations of the VIE. As a result, the exposure to loss is limited to the value of the equity investment of
$5.0 million. As of December 31, 2019, the Company has a contract liability of $8.8 million related to product supply that will be delivered in 2020, which is
included in Accounts Payable and Accrued Liabilities on the Company’s Consolidated Balance Sheets. The carrying value of the Company's investment in the
licensee was $5.0 million on December 31, 2019 and was included in Other Assets on the Company’s Consolidated Balance Sheets.

In July 2017, the Company executed a license agreement and a settlement agreement (the Sarepta Agreements) with Sarepta Therapeutics (Sarepta)

that provide Sarepta with global exclusive rights to the Company’s Duchenne muscular dystrophy (DMD) patent estate for EXONDYS 51 and all future exon-
skipping products. The Sarepta Agreements resolved the ongoing worldwide patent proceedings related to the use of EXONDYS 51 and all future exon-
skipping products for the treatment of DMD. Pursuant to the Sarepta Agreements, in 2017 Sarepta paid the Company a net one-time upfront fee of $31.5
million, which was recognized as license revenue. Under the Sarepta Agreements, Sarepta may pay certain additional regulatory and commercial milestone
fees for exons 51, 45, 53 and possibly on future exon-skipping products to the Company if certain development and sales milestones are achieved.
Additionally, the Company receives from Sarepta royalties based on 5% of net sales in the U.S. through the end of 2023 and 8% of net sales in the EU and in
other countries, where certain of the Company’s patents exist, through September 30, 2024. The Company retained the right to convert the license to a co-
exclusive right in the event it decides to proceed with an exon-skipping therapy for DMD.

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

On October 1, 2015, the Company entered into a Termination and Transition Agreement with Ares Trading S.A. (Merck Serono), as amended and

restated on December 23, 2015 (the A&R Kuvan Agreement), to terminate the Development, License and Commercialization Agreement, dated May 13, 2005,
as amended (the License Agreement), between the Company and Merck Serono, including the license to Kuvan the Company had granted to Merck Serono
under the License Agreement. The Company and Merck Serono have no further rights or obligations under the License Agreement with respect to Kuvan or
Palynziq. Also, on October 1, 2015, the Company and Merck Serono entered into a Termination Agreement (the Pegvaliase Agreement) to terminate the
license to pegvaliase the Company had granted to Merck Serono under the License Agreement. On January 1, 2016, pursuant to the A&R Kuvan Agreement
and the Pegvaliase Agreement, the Company completed the acquisition from Merck Serono and its affiliates of certain rights and other assets with respect to
Kuvan and Palynziq. As a result, the Company acquired all global rights to Kuvan and Palynziq from Merck Serono, with the exception of Kuvan in Japan.
Previously, the Company had exclusive rights to Kuvan in the U.S. and Canada and Palynziq in the U.S. and Japan. Pursuant to the A&R Kuvan Agreement,
the Company paid Merck Serono $374.5 million in cash and, if future sales milestones are met, is obligated to pay Merck Serono up to a maximum of €60.0
million, in cash, which was an estimated fair value of $67.3 million as of December 31, 2019. Pursuant to the Pegvaliase Agreement, the Company paid Merck
Serono €125.0 million in cash when the Palynziq development milestones were achieved.

On October 6, 2015, the Company completed the sale of talazoparib to Medivation Inc. (Medivation) pursuant to an asset purchase agreement (the

Medivation Asset Purchase Agreement). Pursuant to the Medivation Asset Purchase Agreement, Medivation paid the Company an upfront payment of $410.0
million upon the closing of the transaction. In September 2016, Pfizer Inc. acquired Medivation, therefore obligations under the Medivation Asset Purchase
Agreement (Medivation Agreement) transferred to Pfizer. During the fourth quarter of 2015, the Company recognized a net gain of $369.5 million related to the
sale of the talazoparib intangible assets. In accordance with the Medivation Agreement, Pfizer shall pay the Company milestone payments of up to $160.0
million, of which $25.0 million and $50.0 million was paid in 2019 and 2018, respectively, pursuant to achievement of development and regulatory approval
milestones and commercial sales milestones. Commencing in 2018, pursuant to the Medivation Agreement, the Company receives mid-single digit percentage
royalties on net sales of talazoparib.

In October 2012, the Company licensed to Catalyst Pharmaceutical Partners, Inc. (Catalyst) the North American rights to develop and market

Firdapse. In consideration of this licensing arrangement, the Company received from Catalyst a $5.0 million convertible promissory note. Under the terms of
the note agreement, the Company received 6.7 million shares of Catalyst common stock upon the automatic conversion of the convertible promissory note on
December 10, 2012. In exchange for the North American rights to Firdapse, the Company will receive royalties of 7% to 10% on net product sales of Firdapse
in North America, which commenced in the first quarter of 2019. As of December 31, 2019 and 2018, the Company held no shares of Catalyst common stock.

In September 2007, the Company licensed to Asubio Pharma Co., Ltd. (a subsidiary of Daiichi Sankyo) exclusive rights to data and intellectual

property contained in the Kuvan new drug application. The Company receives royalties on net sales of the product in Japan.

The Company is engaged in R&D collaborations with various other entities. These provide for sponsorship of R&D by the Company and may also

provide for exclusive royalty-bearing intellectual property licenses or rights of first negotiation regarding licenses to intellectual property development under the
collaborations. Typically, these agreements can be terminated for cause by either party upon 90 days written notice.

(21) COMMITMENTS AND CONTINGENCIES

Research and Development Funding and Technology Licenses

The Company uses experts and laboratories at universities and other institutions to perform certain R&D activities. These amounts are included as

R&D expense as services are provided. The Company has also licensed technology, for which it is required to pay royalties upon future sales, subject to
certain annual minimums.

Other Commitments

In the normal course of business, the Company enters into various firm purchase commitments primarily related to active pharmaceutical ingredients,
certain inventory related items and certain third-party R&D services. As of December 31, 2019, these commitments for the next five years were approximately
$106.2 million.

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BIOMARIN PHARMACEUTICAL INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)
(In thousands of U.S. Dollars, except per share amounts or as otherwise disclosed)

Under certain of the Company’s lease agreements, the Company is contractually obligated to return leased space to its original condition upon
termination of the applicable lease agreement. The Company records interest expense to accrete the asset retirement obligation liability to full value and
depreciates each retirement obligation asset, both over the term of the associated lease agreement. As of December 31, 2019 and 2018, the balance of the
asset retirement obligation liability was $3.0 million and $4.9 million, respectively. See Note 3 to these Consolidated Financial Statements for further information
on the Company's fair value measurements.

Contingencies

From time to time the Company is involved in legal actions arising in the normal course of its business. The process of resolving matters through

litigation or other means is inherently uncertain and it is possible that an unfavorable resolution of these matters could adversely affect the Company, its results
of operations, financial condition and cash flows. The Company’s general practice is to expense legal fees as services are rendered in connection with legal
matters, and to accrue for liabilities when losses are probable and reasonably estimable.

Contingent Payments

As of December 31, 2019, the Company was also subject to contingent payments totaling approximately $361.3 million upon achievement of certain

development and regulatory activities and commercial sales and licensing milestones if they occur before certain dates in the future. Of this amount, $67.3
million related to the acquisition of certain rights and other assets with respect to Kuvan and Palynziq from Merck Serono and $243.8 million related to
programs that are no longer being developed.

As of December 31, 2019, the Company has recorded $50.8 million of contingent consideration on its Consolidated Balance Sheets, all of which was

long-term.

(22) SUBSEQUENT EVENT

In January 2020, the Company completed the sale of worldwide rights to Firdapse, the Company's commercial product for the treatment of Lambert-
Eaton myasthenic syndrome, to a third party in exchange for a one-time payment of $67.0 million. Under the terms of the agreement, the Company agreed to
provide certain services to the third-party purchaser, such as customer sales and support, for up to 12 months after the closing of the transaction.

127

Exhibit 4.6

Our authorized capital stock consists of 500,000,000 shares of common stock, $0.001 par value per share, and 1,000,000 shares of preferred stock,
$0.001  par  value  per  share.  The  following  description  summarizes  the  most  important  terms  of  our  capital  stock.  Because  it  is  only  a  summary,  it  does  not
contain all the information that may be important to you. For a complete description, you should refer to our restated certificate of incorporation and amended
and restated bylaws, which are included as exhibits to our Annual Report on Form 10-K, and to the applicable provisions of Delaware law.

DESCRIPTION OF CAPITAL STOCK

Common Stock

The holders of our common stock are entitled to one vote for each share held of record on all matters submitted to a vote of the stockholders. Subject
to preferences that may be applicable to any outstanding preferred stock, holders of common stock are entitled to receive ratably such dividends as may be
declared by our board of directors out of funds legally available. In the event of liquidation, dissolution or winding up of us, holders of common stock are entitled
to share ratably in all assets remaining after payment of liabilities and the liquidation preference of any outstanding preferred stock. Holders of common stock
have  no  preemptive  rights  and  no  right  to  cumulate  votes  in  the  election  of  directors.  There  are  no  redemption  or  sinking  fund  provisions  applicable  to  the
common stock. The shares of common stock to be issued pursuant to this offering, when paid for, will be fully paid and nonassessable. The rights, preferences
and privileges of the holders of common stock are subject to, and may be adversely affected by, the rights of the holders of shares of any series of preferred
stock which we have designated or may designate in the future.

Preferred Stock

Pursuant to our restated certificate of incorporation, our board of directors may, without further action by our stockholders, fix the rights, preferences,
privileges, and restrictions of up to an aggregate of 1,000,000 shares of preferred stock, of which 113.676 shares are authorized for issuance as Series A Non-
Convertible Non-Voting Preferred Stock, in one or more series and authorize their issuance. These rights, preferences, and privileges could include dividend
rights, conversion rights, voting rights, terms of redemption, liquidation preferences, sinking fund terms, and the number of shares constituting any series or the
designation of such series, any or all of which may be greater than the rights of our common stock. The issuance of our preferred stock could adversely affect
the  voting  power  of  holders  of  our  common  stock  and  the  likelihood  that  such  holders  will  receive  dividend  payments  and  payments  upon  liquidation.  In
addition, the issuance of preferred stock could have the effect of delaying, deferring, or preventing a change of control or other corporate action. In 2002, we
issued 113.676 shares of our Series A Non-Convertible Non-Voting Preferred stock to an indirect, wholly owned subsidiary in connection with our acquisition of
Glyko BioMedical Ltd. These shares are redeemable, retractable, non-voting, non-convertible and entitled to receive non-cumulative dividends as and when
declared by our board of directors at a rate of 5% per annum.

Effect of Certain Provisions of our Restated Certificate of Incorporation and Bylaws and the Delaware Anti-Takeover Statute

Some provisions of Delaware law and our restated certificate of incorporation and amended and restated bylaws could have the effect of delaying, deferring or
discouraging another person from acquiring control of our company. These provisions, which are summarized below, may have the effect of discouraging
takeover bids. They are also designed, in part, to encourage persons seeking to acquire control of us to negotiate first with our board of directors. We believe
that the benefits of increased protection of our potential ability to negotiate with an unfriendly or unsolicited acquirer outweigh the disadvantages of
discouraging a proposal to acquire us because negotiation of these proposals could result in an improvement of their terms.

Restated Certificate of Incorporation and Amended and Restated Bylaws

•

Stockholder Meetings. Our restated certificate of incorporation and amended and restated bylaws provide that a special meeting of stockholders may
be called by the chairman or lead independent director of our board of directors or by a majority of the then-current directors, thus prohibiting a
stockholder from calling a special meeting. These provisions might delay the ability of our stockholders to force consideration of a proposal or for
stockholders controlling a majority of our capital stock to take any action, including the removal of directors.

1

•

•

•

•

•

•

•

Elimination of Stockholder Action by Written Consent. Our restated certificate of incorporation and amended and restated bylaws eliminate the right of
stockholders to act by written consent without a meeting. As a result, a holder controlling a majority of our capital stock would not be able to amend
our restated bylaws or remove directors without holding a meeting of our stockholders called in accordance with our restated certificate of
incorporation and amended and restated bylaws.

Amendment of Charter Provisions. Any amendment of the above provisions in our restated certificate of incorporation would require approval by
holders of at least 66 2/3% of our then issued and outstanding common stock.

Board of Directors Vacancies. Our amended and restated bylaws authorize only our board of directors to fill vacant directorships, including newly
created seats. In addition, the number of directors constituting our board of directors is permitted to be set only by a resolution adopted by our board
of directors. These provisions prevent a stockholder from increasing the size of our board of directors and then gaining control of our board of
directors by filling the resulting vacancies with its own nominees. This makes it more difficult to change the composition of our board of directors but
promotes continuity of management.

Undesignated Preferred Stock. Our board of directors has the authority, without further action by the stockholders, to issue up to 1,000,000 shares of
undesignated preferred stock with rights and preferences, including voting rights, designated from time to time by our board of directors. The
existence of authorized but unissued shares of preferred stock would enable our board of directors to render more difficult or to discourage an attempt
to obtain control of us by means of a merger, tender offer, proxy contest or other means.

Advance Notice Requirements for Stockholder Proposals and Director Nominations. Our amended and restated bylaws provide advance notice
procedures for stockholders seeking to bring business before our annual meeting of stockholders or to nominate candidates for election as directors at
our annual meeting of stockholders. Our amended and restated bylaws also specify certain requirements regarding the form and content of a
stockholder’s notice. These provisions might preclude our stockholders from bringing matters before our annual meeting of stockholders or from
making nominations for directors at our annual meeting of stockholders if the proper procedures are not followed. We expect that these provisions
might also discourage or deter a potential acquirer from conducting a solicitation of proxies to elect the acquirer’s own slate of directors or otherwise
attempting to obtain control of our company.

No Cumulative Voting. The Delaware General Corporation Law provides that stockholders are not entitled to the right to cumulate votes in the election
of directors unless a corporation’s certificate of incorporation provides otherwise. Our restated certificate of incorporation does not provide for
cumulative voting.

Exclusive Forum. Our amended and restated bylaws provide that the Court of Chancery of the State of Delaware is the sole and exclusive forum for:
any derivative action or proceeding brought on our behalf; any action asserting a claim of breach of a fiduciary duty owed by any director, officer or
other employee of BioMarin to us or our stockholders; any action asserting a claim against us or any of our directors, officers or other employees
arising pursuant to any provision of the General Corporation Law of the State of Delaware, our restated certificate of incorporation or our amended
and restated bylaws; and any action asserting a claim against us or any of our directors, officers or other employees that is governed by the internal
affairs doctrine. This exclusive-forum provision would not apply to suits brought to enforce a duty or liability created by the Securities Act, the
Exchange Act or any other claim for which the U.S. federal courts have exclusive jurisdiction, and further provides that any person or entity that
acquires any interest in shares of our capital stock will be deemed to have notice of and consented to the provisions of such provision, including
consent to the personal jurisdiction of the Court of Chancery of the State of Delaware related to any action covered by such provision.

Delaware Law

We are subject to Section 203 of the General Corporation Law of the State of Delaware (the DGCL), which regulates corporate takeovers. In general,
Section 203 prohibits, with some exceptions, a publicly held Delaware corporation such as us from engaging in a “business combination” with an “interested
stockholder” for a period of three years following the time that the stockholder became an interested stockholder, unless:

•

•

•

prior to the time the stockholder became an interested stockholder, the board of directors of the corporation approved either the business combination
or the transaction which resulted in the stockholder becoming an interested stockholder;

the interested stockholder owned at least 85% of the voting stock of the corporation outstanding at the time the transaction commenced, excluding for
purposes of determining the voting stock outstanding, but not the outstanding voting stock owned by the interested stockholder, (i) shares owned by
persons who are directors and also officers and (ii) shares owned by employee stock plans in which employee participants do not have the right to
determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or

at or subsequent to the time the stockholder became an interested stockholder, the business combination is approved by the board and authorized at
an annual or special meeting of stockholders, and not by written consent, by the affirmative vote of at least 66-2/3% of the outstanding voting stock
which is not owned by the interested stockholder.

Generally, a business combination includes a merger, asset or stock sale, or other transaction or series of transactions together resulting in a financial
benefit to the interested stockholder. An interested stockholder is a person who, together with affiliates and associates, owns or, within three years prior to the
determination of interested stockholder status, did own 15% or more of a corporation’s outstanding voting stock. We expect the existence of this provision to
have an anti-takeover effect with respect to transactions our board of directors does not approve in advance. We also anticipate that DGCL Section 203 may
also discourage attempts that might result in a premium over the market price for the shares of common stock held by stockholders.

Transfer Agent and Registrar

The transfer agent and registrar for our common stock is Computershare Investor Services, 150 Royall Street, Canton, MA 02021.

Listing on The Nasdaq Global Select Market

Our common stock is listed on The Nasdaq Global Select Market under the symbol “BMRN.”

Subsidiaries of BioMarin Pharmaceutical Inc. as of December 31, 2019

Name

BioMarin Commercial Ltd
BioMarin International Holdings Inc

BioMarin International Ltd

Direct Parent

Ownership

Jurisdiction of Incorporation

BioMarin Pharmaceutical Inc.
BioMarin Pharmaceutical Inc.

BioMarin Commercial Ltd.

100% 
100% 

100% 

Ireland
  Delaware

Ireland

Exhibit 21.1

 
 
Consent of Independent Registered Public Accounting Firm

Exhibit 23.1

The Board of Directors
BioMarin Pharmaceutical Inc.:

We consent to the incorporation by reference in the registration statements (Nos. 333-136963, 333-168552, 333-181697, 333-188620, 333-197759, 333-
201504, 333-206094, 333-218695, and 333-234231) on Forms S-8 and in the registration statement (No. 333-212974) on Form S-3 of BioMarin
Pharmaceutical Inc., of our reports dated February 27, 2020, with respect to the consolidated balance sheets of BioMarin Pharmaceutical, Inc. and
subsidiaries, as of December 31, 2019 and 2018, the related consolidated statements of operations, comprehensive loss, stockholders’ equity, and cash flows
for each of the years in the three-year period ended December 31, 2019, and the related notes, and the effectiveness of internal control over financial reporting
as of December 31, 2019, which reports appear in the December 31, 2019 annual report on Form 10-K of BioMarin Pharmaceutical, Inc. Our report refers to
changes in accounting for leases and revenue.

/s/ KPMG LLP
San Francisco, California
February 27, 2020

I, Jean-Jacques Bienaimé, certify that:

1.

I have reviewed this Annual Report on Form 10-K of BioMarin Pharmaceutical Inc.;

CERTIFICATION

Exhibit 31.1

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this
report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the

financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-
15(f)) for the registrant and have:

a)

b)

c)

d)

designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision,
to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within
those entities, particularly during the period in which this report is being prepared;

designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our
supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for
external purposes in accordance with generally accepted accounting principles;

evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the
effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent
fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to
materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)

b)

all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are
reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal
control over financial reporting.

Date: February 27, 2020

/S/ JEAN-JACQUES BIENAIMÉ 

Jean-Jacques Bienaimé
Chief Executive Officer

I, Brian R. Mueller certify that:

1.

I have reviewed this Annual Report on Form 10-K of BioMarin Pharmaceutical Inc.;

CERTIFICATION

Exhibit 31.2

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this
report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the

financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-
15(f)) for the registrant and have:

a)

b)

c)

d)

designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision,
to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within
those entities, particularly during the period in which this report is being prepared;

designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our
supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for
external purposes in accordance with generally accepted accounting principles;

evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the
effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent
fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to
materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)

b)

all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are
reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal
control over financial reporting.

Date: February 27, 2020

/S/ BRIAN R. MUELLER

Brian R. Mueller
Senior Vice President, Finance and 
Acting Chief Financial Officer

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.1

In connection with the Annual Report on Form 10-K of BioMarin Pharmaceutical Inc. (the Company) for the year ended December 31, 2019 as filed with the
Securities and Exchange Commission on the date hereof (the Report), we, Jean-Jacques Bienaimé, and Brian R. Mueller, hereby certify, pursuant to 18 U.S.C.
§1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that:

(1)

the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)
/S/ JEAN-JACQUES BIENAIMÉ 

the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Jean-Jacques Bienaimé
Chief Executive Officer
February 27, 2020

/S/ BRIAN R. MUELLER

Brian R. Mueller
Senior Vice President, Finance and
Acting Chief Financial Officer
February 27, 2020

This certification accompanies the Form 10-K to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be
incorporated by reference into any filing of BioMarin Pharmaceutical Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of
1934, as amended (whether made before or after the date of the Form 10-K), irrespective of any general incorporation language contained in such filing.